[gnome-commander/ConvertWarningsToErrors] Fix gcc warning about string conversion (Werror=write-strings)

[Uwe Scholz <uwescholz src gnome org>]

commit 2f347424f589a1979a96639d2b7807232a307398
Author: Uwe Scholz <uwescholz src gnome org>
Date:   Sat Apr 15 21:12:45 2017 +0200

    Fix gcc warning about string conversion (Werror=write-strings)

 src/dialogs/gnome-cmd-search-dialog.cc |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/src/dialogs/gnome-cmd-search-dialog.cc b/src/dialogs/gnome-cmd-search-dialog.cc
index aa2bc1f..a7939e0 100644
--- a/src/dialogs/gnome-cmd-search-dialog.cc
+++ b/src/dialogs/gnome-cmd-search-dialog.cc
@@ -181,7 +181,7 @@ inline GtkWidget *GnomeCmdSearchDialog::Private::create_placeholder_menu(GnomeCm
     i->path = g_strdup (_("/_Save Profile As..."));
     i->callback = (GtkItemFactoryCallback) manage_profiles;
     i->callback_action = TRUE;
-    i->item_type = "<StockItem>";
+    i->item_type = (gchar*) "<StockItem>";
     i->extra_data = GTK_STOCK_SAVE_AS;
     ++i;
 
@@ -189,12 +189,12 @@ inline GtkWidget *GnomeCmdSearchDialog::Private::create_placeholder_menu(GnomeCm
     {
         i->path = g_strdup (_("/_Manage Profiles..."));
         i->callback = (GtkItemFactoryCallback) manage_profiles;
-        i->item_type = "<StockItem>";
+        i->item_type = (gchar*) "<StockItem>";
         i->extra_data = GTK_STOCK_EDIT;
         ++i;
 
         i->path = g_strdup ("/");
-        i->item_type = "<Separator>";
+        i->item_type = (gchar*) "<Separator>";
         ++i;
 
         for (vector<GnomeCmdData::Selection>::const_iterator p=cfg.profiles.begin(); p!=cfg.profiles.end(); 
++p, ++i)
@@ -202,7 +202,7 @@ inline GtkWidget *GnomeCmdSearchDialog::Private::create_placeholder_menu(GnomeCm
             i->path = g_strconcat ("/", p->name.c_str(), NULL);
             i->callback = (GtkItemFactoryCallback) load_profile;
             i->callback_action = (i-items)-3;
-            i->item_type = "<StockItem>";
+            i->item_type = (gchar*) "<StockItem>";
             i->extra_data = GTK_STOCK_REVERT_TO_SAVED;
         }
     }