[rhythmbox] clipboard: don't replace the playlist menu if it's not changing

[Jonathan Matthew <jmatthew src gnome org>]

commit e2cab78b397fb6ecf60e1a7406deed5809a5342a
Author: Jonathan Matthew <jonathan d14n org>
Date:   Wed Jun 5 08:28:17 2013 +1000

    clipboard: don't replace the playlist menu if it's not changing
    
    https://bugzilla.gnome.org/show_bug.cgi?id=701395

 shell/rb-shell-clipboard.c |   11 +++++++++--
 1 files changed, 9 insertions(+), 2 deletions(-)
---
diff --git a/shell/rb-shell-clipboard.c b/shell/rb-shell-clipboard.c
index 8c6bc24..4c4875e 100644
--- a/shell/rb-shell-clipboard.c
+++ b/shell/rb-shell-clipboard.c
@@ -269,10 +269,17 @@ add_delete_menu_item (RBShellClipboard *clipboard)
 static void
 setup_add_to_playlist_menu (RBShellClipboard *clipboard)
 {
-       g_clear_object (&clipboard->priv->playlist_menu);
+       GMenuModel *new_menu = NULL;
+
        if (clipboard->priv->source) {
-               g_object_get (clipboard->priv->source, "playlist-menu", &clipboard->priv->playlist_menu, 
NULL);
+               g_object_get (clipboard->priv->source, "playlist-menu", &new_menu, NULL);
        }
+       if (new_menu == clipboard->priv->playlist_menu) {
+               g_clear_object (&new_menu);
+               return;
+       }
+       g_clear_object (&clipboard->priv->playlist_menu);
+       clipboard->priv->playlist_menu = new_menu;
 
        if (clipboard->priv->playlist_menu) {
                rb_menu_update_link (clipboard->priv->edit_menu,