[devhelp] dh-preferences: no need to cast to G_OBJECT

[Ignacio Casal Quinteiro <icq src gnome org>]

commit 463c1627851cd6e21fa8f68f03c6f0ef1ce40d44
Author: Ignacio Casal Quinteiro <ignacio casal nice-software com>
Date:   Sun Sep 22 22:55:59 2013 +0200

    dh-preferences: no need to cast to G_OBJECT

 src/dh-preferences.c |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)
---
diff --git a/src/dh-preferences.c b/src/dh-preferences.c
index 9e9d52b..ce4e4c5 100644
--- a/src/dh-preferences.c
+++ b/src/dh-preferences.c
@@ -677,17 +677,18 @@ dh_preferences_show_dialog (void)
         GSettings *settings_fonts = dh_settings_peek_fonts_settings (prefs->settings);
         GSettings *settings_contents = dh_settings_peek_contents_settings (prefs->settings);
         g_settings_bind (settings_fonts, "use-system-fonts",
-                         G_OBJECT (prefs->system_fonts_button),
+                         prefs->system_fonts_button,
                          "active", G_SETTINGS_BIND_DEFAULT);
         g_settings_bind (settings_fonts, "fixed-font",
-                         G_OBJECT (prefs->fixed_font_button),
+                         prefs->fixed_font_button,
                          "font-name", G_SETTINGS_BIND_DEFAULT);
         g_settings_bind (settings_fonts, "variable-font",
-                         G_OBJECT (prefs->variable_font_button),
+                         prefs->variable_font_button,
                          "font-name", G_SETTINGS_BIND_DEFAULT);
 
         g_settings_bind (settings_contents,
-                         "group-books-by-language", G_OBJECT (prefs->bookshelf_group_by_language_button),
+                         "group-books-by-language",
+                         prefs->bookshelf_group_by_language_button,
                          "active", G_SETTINGS_BIND_DEFAULT);
 
         dh_util_builder_connect (