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[pan] another bunch of nullptrs

commit 38324ba817fc725ba0df1f8d3b37cecb693a6ef8
Author: Thomas Tanner <thosrtanner58 yahoo com>
Date:   Wed Sep 28 21:05:28 2022 +0100

    another bunch of nullptrs

 pan/data/cert-store.h         |  4 ++--
 pan/data/data.h               |  8 ++++----
 pan/data/encode-cache.h       |  2 +-
 pan/data/parts.h              |  2 +-
 pan/general/worker-pool.h     |  2 +-
 pan/gui/hig.h                 |  2 +-
 pan/gui/server-ui.cc          | 22 ++++++++++-----------
 pan/gui/task-pane.cc          | 46 +++++++++++++++++++++----------------------
 pan/gui/url.cc                |  6 +++---
 pan/tasks/nntp.h              |  2 +-
 pan/tasks/socket-impl-main.h  |  4 ++--
 pan/tasks/task-article.h      |  8 ++++----
 pan/tasks/task-upload.h       | 10 +++++-----
 pan/usenet-utils/mime-utils.h |  2 +-
 14 files changed, 60 insertions(+), 60 deletions(-)
---
diff --git a/pan/data/cert-store.h b/pan/data/cert-store.h
index d4dc4ef..ab906d8 100644
--- a/pan/data/cert-store.h
+++ b/pan/data/cert-store.h
@@ -64,7 +64,7 @@ namespace pan
     public:
 
       int get_all_certs_from_disk();
-      bool import_from_file (const Quark& server, const char* fn = 0);
+      bool import_from_file (const Quark& server, const char* fn = nullptr);
 
       bool in_blacklist (const Quark& s)
       {
@@ -85,7 +85,7 @@ namespace pan
       {
         if (_cert_to_server.count(s) > 0)
           return _cert_to_server[s];
-        return 0;
+        return nullptr;
       }
 
     private:
diff --git a/pan/data/data.h b/pan/data/data.h
index 8c250a6..53d8da8 100644
--- a/pan/data/data.h
+++ b/pan/data/data.h
@@ -564,10 +564,10 @@ namespace pan
           virtual const Article* get_article (const Quark& mid) const=0;
 
           virtual void set_filter (const ShowType     show_type = SHOW_ARTICLES,
-                                   const FilterInfo * filter_or_null_to_reset = 0) = 0;
+                                   const FilterInfo * filter_or_null_to_reset = nullptr) = 0;
 
           virtual void set_rules (const ShowType     show_type = SHOW_ARTICLES,
-                                   const RulesInfo * filter_or_null_to_reset = 0) = 0;
+                                   const RulesInfo * filter_or_null_to_reset = nullptr) = 0;
       };
 
        /**
@@ -576,8 +576,8 @@ namespace pan
        virtual ArticleTree* group_get_articles (const Quark       & group,
                                                 const Quark       & save_path,  // for auto-download
                                                 const ShowType      show_type = SHOW_ARTICLES,
-                                                const FilterInfo  * criteria = 0,
-                                                const RulesInfo   * rules    = 0) const=0;
+                                                const FilterInfo  * criteria = nullptr,
+                                                const RulesInfo   * rules    = nullptr) const=0;
 
        virtual void group_clear_articles (const Quark& group) = 0;
 
diff --git a/pan/data/encode-cache.h b/pan/data/encode-cache.h
index 1affc0c..0249744 100644
--- a/pan/data/encode-cache.h
+++ b/pan/data/encode-cache.h
@@ -88,7 +88,7 @@ namespace pan
         size_t _size;
         time_t _date;
         FILE * _fp;
-        MsgInfo(): _size(0), _date(0), _fp(0) {}
+        MsgInfo(): _size(0), _date(0), _fp(nullptr) {}
       };
 
       typedef std::map<Quark,MsgInfo> mid_to_info_t;
diff --git a/pan/data/parts.h b/pan/data/parts.h
index 289c57e..cdfbddd 100644
--- a/pan/data/parts.h
+++ b/pan/data/parts.h
@@ -143,7 +143,7 @@ namespace pan
         size_t len_used;
         char * packed_mid;
         Part(): number(0), bytes(0),
-                len_used(0), packed_mid(0) {}
+                len_used(0), packed_mid(nullptr) {}
         Part(number_t n, bytes_t b, size_t l);
         ~Part() { delete [] packed_mid; }
         Part (const Part&);
diff --git a/pan/general/worker-pool.h b/pan/general/worker-pool.h
index f107a30..32bc5b4 100644
--- a/pan/general/worker-pool.h
+++ b/pan/general/worker-pool.h
@@ -60,7 +60,7 @@ namespace pan
       {
         public:
 
-          Worker(): pool(0), listener(0),
+          Worker(): pool(nullptr), listener(nullptr),
                     cancelled(false), silent(false),
                     delete_worker(false) {}
 
diff --git a/pan/gui/hig.h b/pan/gui/hig.h
index ebab4ad..eb863f2 100644
--- a/pan/gui/hig.h
+++ b/pan/gui/hig.h
@@ -70,7 +70,7 @@ namespace pan
                                          int         * row,
                                          const char  * mnemonic_string,
                                          GtkWidget   * control,
-                                         GtkWidget   * mnemonic_or_null_if_control_is_mnemonic=0);
+                                         GtkWidget   * mnemonic_or_null_if_control_is_mnemonic= nullptr);
 
     static void message_dialog_set_text (GtkMessageDialog * dialog,
                                          const char * primary,
diff --git a/pan/gui/server-ui.cc b/pan/gui/server-ui.cc
index 3f2b6ee..737f469 100644
--- a/pan/gui/server-ui.cc
+++ b/pan/gui/server-ui.cc
@@ -149,7 +149,7 @@ namespace
   edit_dialog_populate (Data&, Prefs& prefs, const Quark& server, ServerEditDialog * d)
   {
     // sanity clause
-    g_return_if_fail (d!=0);
+    g_return_if_fail (d!=nullptr );
     g_return_if_fail (GTK_IS_WIDGET(d->dialog));
 
     d->server = server;
@@ -285,7 +285,7 @@ namespace
       if (gtk_combo_box_get_active_iter (combo, &iter))
         gtk_tree_model_get (gtk_combo_box_get_model(combo), &iter, 1, &header_comp, -1);
 
-      const char * err_msg (0);
+      const char * err_msg (nullptr);
       if (addr.empty())
         err_msg = _("Please specify the server's address.");
 
@@ -553,8 +553,8 @@ namespace
     const guint8 * pixbuf_txt;
     GdkPixbuf * pixbuf;
   } _icons[ICON_QTY] = {
-    { icon_plain,  0 },
-    { icon_cert,   0 }
+    { icon_plain,  nullptr },
+    { icon_cert,   nullptr }
   };
 }
 
@@ -599,7 +599,7 @@ namespace
   Quark
   get_selected_server (ServerListDialog * d)
   {
-    g_assert (d != 0);
+    g_assert (d != nullptr);
 
     Quark server;
 
@@ -607,7 +607,7 @@ namespace
     GtkTreeModel * model;
     GtkTreeIter iter;
     if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
-      char * host (0);
+      char * host (nullptr);
       gtk_tree_model_get (model, &iter, COL_DATA, &host, -1);
       if (host) {
         server = host;
@@ -622,7 +622,7 @@ namespace
   Quark
   get_selected_server_name (ServerListDialog * d)
   {
-    g_assert (d != 0);
+    g_assert (d != nullptr);
 
     Quark server;
 
@@ -630,7 +630,7 @@ namespace
     GtkTreeModel * model;
     GtkTreeIter iter;
     if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
-      char * host (0);
+      char * host (nullptr);
       gtk_tree_model_get (model, &iter, COL_HOST, &host, -1);
       if (host) {
         server = host;
@@ -805,7 +805,7 @@ namespace
         if (!buf) g_snprintf(buf,sizeof(buf), "%s", _("No information available.")) ;
 
         GtkWidget * w = gtk_message_dialog_new (
-        0,
+        nullptr,
         GtkDialogFlags(GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT),
         GTK_MESSAGE_INFO,
         GTK_BUTTONS_CLOSE, NULL);
@@ -1028,7 +1028,7 @@ sec_dialog_new (Data& data, Queue& queue, Prefs& prefs, GtkWindow* parent)
   ServerListDialog * d = new ServerListDialog (data, queue, prefs);
 
   for (guint i=0; i<ICON_QTY; ++i)
-    _icons[i].pixbuf = gdk_pixbuf_new_from_inline (-1, _icons[i].pixbuf_txt, FALSE, 0);
+    _icons[i].pixbuf = gdk_pixbuf_new_from_inline (-1, _icons[i].pixbuf_txt, FALSE, nullptr);
 
   // dialog
   char * title = g_strdup_printf ("Pan: %s", _("SSL Certificates"));
@@ -1053,7 +1053,7 @@ sec_dialog_new (Data& data, Queue& queue, Prefs& prefs, GtkWindow* parent)
 
   GtkCellRenderer * r = GTK_CELL_RENDERER (g_object_new (GTK_TYPE_CELL_RENDERER_PIXBUF, "xpad", 2,"ypad", 
0,NULL));
   GtkTreeViewColumn * column = gtk_tree_view_column_new_with_attributes (_("Certificates"), r, NULL);
-  gtk_tree_view_column_set_cell_data_func (column, r, render_cert_flag, 0, 0);
+  gtk_tree_view_column_set_cell_data_func (column, r, render_cert_flag, nullptr, nullptr);
   gtk_tree_view_append_column (GTK_TREE_VIEW(w), column);
 
   r = gtk_cell_renderer_text_new ();
diff --git a/pan/gui/task-pane.cc b/pan/gui/task-pane.cc
index ed696ed..bceb1aa 100644
--- a/pan/gui/task-pane.cc
+++ b/pan/gui/task-pane.cc
@@ -55,7 +55,7 @@ void
 TaskPane :: get_selected_tasks_foreach (GtkTreeModel *model, GtkTreePath *, GtkTreeIter *iter, gpointer 
list_g)
 {
 
-  Task * task (0);
+  Task * task (nullptr);
   gtk_tree_model_get (model, iter, COL_TASK_POINTER, &task, -1);
   static_cast<tasks_t*>(list_g)->push_back (task);
 }
@@ -114,7 +114,7 @@ namespace
   {
 
     EvolutionDateMaker date_maker;
-    char * date(0);
+    char * date(nullptr);
     TaskUpload * tu (dynamic_cast<TaskUpload*>(task));
 
     if (tu)
@@ -186,12 +186,12 @@ TaskPane:: on_tooltip_query(GtkWidget  *widget,
   GtkTreeIter iter;
   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
   GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
-  GtkTreePath *path(0);
+  GtkTreePath *path(nullptr);
 
   if (!gtk_tree_view_get_tooltip_context (tree_view, &x, &y, keyboard_tip, &model, &path, &iter))
     return false;
 
-  Task * task(0);
+  Task * task(nullptr);
   gtk_tree_model_get (model, &iter, COL_TASK_POINTER, &task, -1);
 
   char buffer[4096];
@@ -540,7 +540,7 @@ namespace
                 GtkTreeIter *iter,
                 Queue * queue)
   {
-    Task * task (0);
+    Task * task (nullptr);
     int state;
     gtk_tree_model_get (model, iter, COL_TASK_POINTER, &task,
                                      COL_TASK_STATE,  &state,
@@ -549,7 +549,7 @@ namespace
     if (!task) return;
 
     // build the state string
-    const char * state_str (0);
+    const char * state_str (nullptr);
     switch (state) {
       case Queue::RUNNING:  state_str = _("Running"); break;
       case Queue::DECODING: state_str = _("Decoding"); break;
@@ -614,7 +614,7 @@ namespace
       status.insert (0, buf);
     }
 
-    char * str (0);
+    char * str (nullptr);
     if (state == Queue::RUNNING || state == Queue::DECODING
         || state == Queue::ENCODING)
       str = g_markup_printf_escaped ("<b>%s</b>\n<small>%s</small>", descr, status.c_str());
@@ -664,15 +664,15 @@ namespace
 namespace
 {
 
-  void do_move_up        (GtkAction*, gpointer p)  { static_cast<TaskPane*>(p)->up_clicked_cb(0, 
static_cast<TaskPane*>(p)); }
-  void do_move_down      (GtkAction*, gpointer p)  { static_cast<TaskPane*>(p)->down_clicked_cb(0, 
static_cast<TaskPane*>(p)); }
-  void do_move_top       (GtkAction*, gpointer p)  { static_cast<TaskPane*>(p)->top_clicked_cb(0, 
static_cast<TaskPane*>(p)); }
-  void do_move_bottom    (GtkAction*, gpointer p)  { static_cast<TaskPane*>(p)->bottom_clicked_cb(0, 
static_cast<TaskPane*>(p)); }
-  void do_show_info      (GtkAction*, gpointer p)  { static_cast<TaskPane*>(p)->show_info_clicked_cb(0, 
static_cast<TaskPane*>(p)); }
-  void do_stop           (GtkAction*, gpointer p)  { static_cast<TaskPane*>(p)->stop_clicked_cb(0, 
static_cast<TaskPane*>(p)); }
-  void do_delete         (GtkAction*, gpointer p)  { static_cast<TaskPane*>(p)->delete_clicked_cb(0, 
static_cast<TaskPane*>(p)); }
-  void do_restart        (GtkAction*, gpointer p)  { static_cast<TaskPane*>(p)->restart_clicked_cb(0, 
static_cast<TaskPane*>(p)); }
-  void do_change_dest    (GtkAction*, gpointer p)  { static_cast<TaskPane*>(p)->change_dest_clicked_cb(0, 
static_cast<TaskPane*>(p)); }
+  void do_move_up        (GtkAction*, gpointer p)  { static_cast<TaskPane*>(p)->up_clicked_cb(nullptr, 
static_cast<TaskPane*>(p)); }
+  void do_move_down      (GtkAction*, gpointer p)  { static_cast<TaskPane*>(p)->down_clicked_cb(nullptr, 
static_cast<TaskPane*>(p)); }
+  void do_move_top       (GtkAction*, gpointer p)  { static_cast<TaskPane*>(p)->top_clicked_cb(nullptr, 
static_cast<TaskPane*>(p)); }
+  void do_move_bottom    (GtkAction*, gpointer p)  { static_cast<TaskPane*>(p)->bottom_clicked_cb(nullptr, 
static_cast<TaskPane*>(p)); }
+  void do_show_info      (GtkAction*, gpointer p)  { 
static_cast<TaskPane*>(p)->show_info_clicked_cb(nullptr, static_cast<TaskPane*>(p)); }
+  void do_stop           (GtkAction*, gpointer p)  { static_cast<TaskPane*>(p)->stop_clicked_cb(nullptr, 
static_cast<TaskPane*>(p)); }
+  void do_delete         (GtkAction*, gpointer p)  { static_cast<TaskPane*>(p)->delete_clicked_cb(nullptr, 
static_cast<TaskPane*>(p)); }
+  void do_restart        (GtkAction*, gpointer p)  { static_cast<TaskPane*>(p)->restart_clicked_cb(nullptr, 
static_cast<TaskPane*>(p)); }
+  void do_change_dest    (GtkAction*, gpointer p)  { 
static_cast<TaskPane*>(p)->change_dest_clicked_cb(nullptr, static_cast<TaskPane*>(p)); }
 
   GtkActionEntry taskpane_popup_entries[] =
   {
@@ -732,7 +732,7 @@ TaskPane :: add_actions (GtkWidget * box)
   _uim = gtk_ui_manager_new ();
   // read the file...
   char * filename = g_build_filename (file::get_pan_home().c_str(), "taskpane.ui", NULL);
-  GError * err (0);
+  GError * err (nullptr);
   if (!gtk_ui_manager_add_ui_from_file (_uim, filename, &err)) {
     g_clear_error (&err);
     gtk_ui_manager_add_ui_from_string (_uim, fallback_taskpane_ui, -1, &err);
@@ -899,7 +899,7 @@ namespace
   void entry_icon_release (GtkEntry*, GtkEntryIconPosition icon_pos, GdkEventButton*, gpointer menu)
   {
     if (icon_pos == GTK_ENTRY_ICON_PRIMARY)
-      gtk_menu_popup (GTK_MENU(menu), 0, 0, 0, 0, 0, gtk_get_current_event_time());
+      gtk_menu_popup (GTK_MENU(menu), nullptr, nullptr, nullptr, nullptr, 0, gtk_get_current_event_time());
   }
 
   void entry_icon_release_2 (GtkEntry *entry, GtkEntryIconPosition icon_pos, GdkEventButton*, gpointer 
pane_gpointer)
@@ -917,7 +917,7 @@ namespace
 
      if (search_text.empty()) return true;
 
-     Task *task(0);
+     Task *task(nullptr);
      /* Get value from column */
      gtk_tree_model_get( GTK_TREE_MODEL(model), iter, COL_TASK_POINTER, &task, -1 );
 
@@ -997,7 +997,7 @@ TaskPane :: create_filter_entry ()
     search_mode = 1;
   else
     search_mode = 0;
-  GSList * l = 0;
+  GSList * l = nullptr;
   for (int i=0, qty=G_N_ELEMENTS(mode_strings); i<qty; ++i) {
     GtkWidget * w = gtk_radio_menu_item_new_with_label (l, _(mode_strings[i]));
     l = gtk_radio_menu_item_get_group (GTK_RADIO_MENU_ITEM(w));
@@ -1052,7 +1052,7 @@ TaskPane :: TaskPane (Queue& queue, Prefs& prefs): _queue(queue), _prefs(prefs)
     w = add_button (buttons, GTK_STOCK_DELETE, G_CALLBACK(delete_clicked_cb), this);
     gtk_widget_set_tooltip_text( w, _("Delete Tasks"));
     gtk_box_pack_start (GTK_BOX(buttons), gtk_separator_new(GTK_ORIENTATION_VERTICAL), 0, 0, 0);
-    w = add_button (buttons, GTK_STOCK_CLOSE, 0, 0);
+    w = add_button (buttons, GTK_STOCK_CLOSE, nullptr, nullptr);
     g_signal_connect_swapped (w, "clicked", G_CALLBACK(gtk_widget_destroy), _root);
     w = _popup_toggle = gtk_check_button_new ();
     gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(w), _prefs.get_flag("show-taskpane-popups", true));
@@ -1069,7 +1069,7 @@ TaskPane :: TaskPane (Queue& queue, Prefs& prefs): _queue(queue), _prefs(prefs)
 
   // statusbar
   GtkWidget * hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, PAD);
-  w = _status_label = gtk_label_new (0);
+  w = _status_label = gtk_label_new (nullptr);
   gtk_box_pack_start (GTK_BOX(hbox), w, false, false, PAD_SMALL);
 
   _store = gtk_list_store_new (NUM_COLS, G_TYPE_POINTER, G_TYPE_INT);
@@ -1078,7 +1078,7 @@ TaskPane :: TaskPane (Queue& queue, Prefs& prefs): _queue(queue), _prefs(prefs)
   gtk_tree_view_set_rules_hint (GTK_TREE_VIEW(_view), true);
   GtkCellRenderer * renderer = gtk_cell_renderer_text_new ();
   GtkTreeViewColumn * col = gtk_tree_view_column_new_with_attributes (_("State"), renderer, NULL);
-  gtk_tree_view_column_set_cell_data_func (col, renderer, (GtkTreeCellDataFunc)render_state, &_queue, 0);
+  gtk_tree_view_column_set_cell_data_func (col, renderer, (GtkTreeCellDataFunc)render_state, &_queue, 
nullptr);
   gtk_tree_view_append_column (GTK_TREE_VIEW(_view), col);
   GtkTreeSelection * selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (_view));
   gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
diff --git a/pan/gui/url.cc b/pan/gui/url.cc
index 94ffb52..534aa57 100644
--- a/pan/gui/url.cc
+++ b/pan/gui/url.cc
@@ -89,9 +89,9 @@ URL :: open (const Prefs& prefs, const char * url, Mode mode)
     else if (strstr(url,"http") || strstr(url,"://"))
       mode = WEB;
     else // ...
-      mode = WEB; 
+      mode = WEB;
   }
-  
+
   if ((mode==AUTO || mode==WEB) && !strstr (url, "://") && strstr (url, "www")) {
     mode = WEB;
     tmp = std::string("http://";) + url;
@@ -115,7 +115,7 @@ URL :: open (const Prefs& prefs, const char * url, Mode mode)
 
   cmd += std::string(" \"") + tmp + '"';
   // std::cerr << __FILE__ << ':' << __LINE__ << " cmd [" << cmd << ']' << std::endl;
-  GError * err (0);
+  GError * err (nullptr);
   g_spawn_command_line_async (cmd.c_str(), &err);
   if (err != NULL) {
     Log::add_err_va (_("Error starting URL: %s (Command was: %s)"), err->message, cmd.c_str());
diff --git a/pan/tasks/nntp.h b/pan/tasks/nntp.h
index 04d89e0..6f6c4f6 100644
--- a/pan/tasks/nntp.h
+++ b/pan/tasks/nntp.h
@@ -154,7 +154,7 @@ namespace pan {
           _server_info(info),
           _socket(socket),
           _socket_error(false),
-          _listener(0),
+          _listener(nullptr),
           _username(username),
           _password(password),
           _nntp_response_text(false),
diff --git a/pan/tasks/socket-impl-main.h b/pan/tasks/socket-impl-main.h
index 2cd5895..8eacfe4 100644
--- a/pan/tasks/socket-impl-main.h
+++ b/pan/tasks/socket-impl-main.h
@@ -56,8 +56,8 @@ namespace
 namespace
 {
 
-  static t_getaddrinfo p_getaddrinfo (0);
-  static t_freeaddrinfo p_freeaddrinfo (0);
+  static t_getaddrinfo p_getaddrinfo (nullptr);
+  static t_freeaddrinfo p_freeaddrinfo (nullptr);
 
   static void ensure_module_init (void)
   {
diff --git a/pan/tasks/task-article.h b/pan/tasks/task-article.h
index 407cb20..df858e9 100644
--- a/pan/tasks/task-article.h
+++ b/pan/tasks/task-article.h
@@ -71,10 +71,10 @@ namespace pan
                    ArticleCache       & cache,
                    ArticleRead        & read,
                    const ArticleActionType&  mark_read_action,
-                   Progress::Listener* l=0,
+                   Progress::Listener* l=nullptr,
                    SaveMode             save_mode = NONE,
                    const Quark        & save_path = Quark(),
-                   const char         * filename=0,
+                   const char         * filename=nullptr,
                    const SaveOptions  & options=SAVE_ALL);
       virtual ~TaskArticle ();
       time_t get_time_posted () const { return _time_posted; }
@@ -144,13 +144,13 @@ namespace pan
         void reset() {
           buf_t tmp;
           buf.swap (tmp); // deallocates space
-          nntp = 0;
+          nntp = nullptr;
         }
       };
       typedef std::vector<Needed> needed_t;
       needed_t _needed;
 
-      void update_work (NNTP* checkin_pending=0);
+      void update_work (NNTP* checkin_pending=nullptr);
   };
 }
 
diff --git a/pan/tasks/task-upload.h b/pan/tasks/task-upload.h
index f680316..c953b5a 100644
--- a/pan/tasks/task-upload.h
+++ b/pan/tasks/task-upload.h
@@ -80,8 +80,8 @@ namespace pan
         std::string mid; // for rng
         std::string cachename;
         Xref xref;
-        Needed (): nntp(0), bytes(0) , partno(1) {}
-        void reset() { nntp = 0; }
+        Needed (): nntp(nullptr), bytes(0) , partno(1) {}
+        void reset() { nntp = nullptr; }
       };
 
       typedef std::map<int, Needed> needed_t;
@@ -92,8 +92,8 @@ namespace pan
                    EncodeCache               & cache,
                    Article                     article,
                    UploadInfo                  format,
-                   GMimeMessage *              msg=0,
-                   Progress::Listener        * listener= 0);
+                   GMimeMessage *              msg=nullptr,
+                   Progress::Listener        * listener= nullptr);
 
       virtual ~TaskUpload ();
 
@@ -156,7 +156,7 @@ namespace pan
       bool _first;
       std::string _groups;
 
-      void update_work (NNTP * checkin_pending = 0);
+      void update_work (NNTP * checkin_pending = nullptr);
 
     public:
       void set_encoder_done (bool setme) { _encoder_has_run = setme; }
diff --git a/pan/usenet-utils/mime-utils.h b/pan/usenet-utils/mime-utils.h
index d7b4e16..ed93c10 100644
--- a/pan/usenet-utils/mime-utils.h
+++ b/pan/usenet-utils/mime-utils.h
@@ -115,7 +115,7 @@ namespace pan
   extern iconv_t conv;
   extern bool iconv_inited;
 
-  static char * __g_mime_iconv_strdup (iconv_t cd, const char *str, const char* charset=0)
+  static char * __g_mime_iconv_strdup (iconv_t cd, const char *str, const char* charset=nullptr)
   {
     return g_mime_iconv_strndup(cd, str, strlen(str));
   }
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