[file-roller/wip/jtojnar/engrampa-backports] Fix bunch of remaining warnings

[Jan Tojnar <jtojnar src gnome org>]

commit 7edbaa48513216f3d5210f85f7cfb6c7fc7c3471
Author: Jan Tojnar <jtojnar gmail com>
Date:   Wed Jul 27 20:55:16 2022 +0200

    Fix bunch of remaining warnings
    
    warning: ‘icon_extents.height’ may be used uninitialized [-Wmaybe-uninitialized]
    
    warning: cast between incompatible function types from ‘void (*)(NautilusMenuProviderInterface *)’ {aka 
‘void (*)(struct _NautilusMenuProviderInterface *)’} to ‘void (*)(void *, void *)’ [-Wcast-function-type]
    
    Also enable -Wextra instead of bunch of separate flags.

 meson.build                    |  8 ++------
 nautilus/nautilus-fileroller.c | 10 +++++-----
 src/eggtreemultidnd.c          |  2 +-
 src/fr-init.c                  |  5 ++---
 4 files changed, 10 insertions(+), 15 deletions(-)
---
diff --git a/meson.build b/meson.build
index d6b95f61..4a9bb37a 100644
--- a/meson.build
+++ b/meson.build
@@ -112,17 +112,13 @@ c_args = [ '-DGLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_2_38' ]
 if get_option('buildtype').contains('debug')
   test_args = [ 
     '-Wall', 
+    '-Wextra',
     '-Wcast-align', 
-    '-Wtype-limits', 
-    '-Wclobbered', 
-    '-Wempty-body', 
-    '-Wignored-qualifiers', 
     '-Wmissing-prototypes',
     '-Wnested-externs', 
     '-Wpointer-arith', 
-    '-Wsign-compare',
     '-Wformat-security',
-    '-Wmissing-field-initializers',
+    '-Wno-unused-parameter',
   ]
 else
   c_args += [ '-Wno-deprecated-declarations' ]
diff --git a/nautilus/nautilus-fileroller.c b/nautilus/nautilus-fileroller.c
index 18d7d151..3d41d686 100644
--- a/nautilus/nautilus-fileroller.c
+++ b/nautilus/nautilus-fileroller.c
@@ -293,22 +293,22 @@ nautilus_fr_get_file_items (NautilusMenuProvider *provider,
 
 
 static void
-nautilus_fr_menu_provider_interface_init (NautilusMenuProviderInterface *interface)
+nautilus_fr_menu_provider_interface_init (NautilusMenuProviderInterface *g_iface, gpointer iface_data)
 {
-       interface->get_file_items = nautilus_fr_get_file_items;
+       g_iface->get_file_items = nautilus_fr_get_file_items;
 }
 
 
 static void
-nautilus_fr_instance_init (NautilusFr *fr)
+nautilus_fr_instance_init (NautilusFr *fr, NautilusFrClass* g_class)
 {
 }
 
 
 static void
-nautilus_fr_class_init (NautilusFrClass *class)
+nautilus_fr_class_init (NautilusFrClass *g_class, gpointer class_data)
 {
-       parent_class = g_type_class_peek_parent (class);
+       parent_class = g_type_class_peek_parent (g_class);
 }
 
 
diff --git a/src/eggtreemultidnd.c b/src/eggtreemultidnd.c
index e77d79c9..0287bea7 100644
--- a/src/eggtreemultidnd.c
+++ b/src/eggtreemultidnd.c
@@ -370,7 +370,7 @@ egg_tree_multi_drag_motion_event (GtkWidget      *widget,
                          /* create a multi row drag icon */
 
                          const int        icon_offset = DRAG_ICON_OFFSET;
-                         GdkRectangle     icon_extents;
+                         GdkRectangle     icon_extents = { };
                          cairo_surface_t *multi_drag_icon;
                          cairo_t         *cr;
                          int              n_icons, i, offset;
diff --git a/src/fr-init.c b/src/fr-init.c
index 8928e19f..94f23808 100644
--- a/src/fr-init.c
+++ b/src/fr-init.c
@@ -247,8 +247,8 @@ fr_registered_archive_new (GType command_type)
        reg_com = g_new0 (FrRegisteredArchive, 1);
        reg_com->ref = 1;
        reg_com->type = command_type;
-       reg_com->caps = g_ptr_array_new ();
-       reg_com->packages = g_ptr_array_new ();
+       reg_com->caps = g_ptr_array_new_with_free_func (g_free);
+       reg_com->packages = g_ptr_array_new_with_free_func (g_free);
 
        archive = (FrArchive*) g_object_new (reg_com->type, NULL);
        mime_types = fr_archive_get_supported_types (archive);
@@ -290,7 +290,6 @@ fr_registered_archive_unref (FrRegisteredArchive *reg_com)
        if (--(reg_com->ref) != 0)
                return;
 
-       g_ptr_array_foreach (reg_com->caps, (GFunc) g_free, NULL);
        g_ptr_array_free (reg_com->caps, TRUE);
        g_free (reg_com);
 }