[rhythmbox] ref playlist classes so they actually exist if needed

[Jonathan Matthew <jmatthew src gnome org>]

commit 3ab606c19acddefee9bdc2f19e6769b67f2570b0
Author: Jonathan Matthew <jonathan d14n org>
Date:   Tue Jan 10 21:37:07 2012 +1000

    ref playlist classes so they actually exist if needed
    
    fixes crash on startup introduced in the previous commit

 sources/rb-auto-playlist-source.c   |    4 +++-
 sources/rb-static-playlist-source.c |    4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/sources/rb-auto-playlist-source.c b/sources/rb-auto-playlist-source.c
index eac629c..3629456 100644
--- a/sources/rb-auto-playlist-source.c
+++ b/sources/rb-auto-playlist-source.c
@@ -240,7 +240,7 @@ rb_auto_playlist_source_create_actions (RBShell *shell)
 	RBAutoPlaylistSourceClass *klass;
 	GtkUIManager *uimanager;
 
-	klass = RB_AUTO_PLAYLIST_SOURCE_CLASS (g_type_class_peek (RB_TYPE_AUTO_PLAYLIST_SOURCE));
+	klass = RB_AUTO_PLAYLIST_SOURCE_CLASS (g_type_class_ref (RB_TYPE_AUTO_PLAYLIST_SOURCE));
 
 	klass->action_group = gtk_action_group_new ("AutoPlaylistActions");
 	gtk_action_group_set_translation_domain (klass->action_group, GETTEXT_PACKAGE);
@@ -258,6 +258,8 @@ rb_auto_playlist_source_create_actions (RBShell *shell)
 	rb_source_search_basic_create_for_actions (klass->action_group,
 						   rb_auto_playlist_source_radio_actions,
 						   G_N_ELEMENTS (rb_auto_playlist_source_radio_actions));
+
+	g_type_class_unref (klass);
 }
 
 static void
diff --git a/sources/rb-static-playlist-source.c b/sources/rb-static-playlist-source.c
index b71170f..2ebcbac 100644
--- a/sources/rb-static-playlist-source.c
+++ b/sources/rb-static-playlist-source.c
@@ -199,7 +199,7 @@ rb_static_playlist_source_create_actions (RBShell *shell)
 	RBStaticPlaylistSourceClass *klass;
 	GtkUIManager *uimanager;
 
-	klass = RB_STATIC_PLAYLIST_SOURCE_CLASS (g_type_class_peek (RB_TYPE_STATIC_PLAYLIST_SOURCE));
+	klass = RB_STATIC_PLAYLIST_SOURCE_CLASS (g_type_class_ref (RB_TYPE_STATIC_PLAYLIST_SOURCE));
 
 	klass->action_group = gtk_action_group_new ("StaticPlaylistActions");
 	gtk_action_group_set_translation_domain (klass->action_group, GETTEXT_PACKAGE);
@@ -217,6 +217,8 @@ rb_static_playlist_source_create_actions (RBShell *shell)
 	rb_source_search_basic_create_for_actions (klass->action_group,
 						   rb_static_playlist_source_radio_actions,
 						   G_N_ELEMENTS (rb_static_playlist_source_radio_actions));
+
+	g_type_class_unref (klass);
 }
 static void
 rb_static_playlist_source_init (RBStaticPlaylistSource *source)