[rhythmbox] browser-source: don't unref NULL if the source doesn't have playlists

[Jonathan Matthew <jmatthew src gnome org>]

commit df1dee3a05c2e203b1953d2d66dd9e494418d477
Author: Jonathan Matthew <jonathan d14n org>
Date:   Fri Sep 9 20:52:09 2016 +1000

    browser-source: don't unref NULL if the source doesn't have playlists

 sources/rb-browser-source.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/sources/rb-browser-source.c b/sources/rb-browser-source.c
index bf775e9..6c7a592 100644
--- a/sources/rb-browser-source.c
+++ b/sources/rb-browser-source.c
@@ -254,7 +254,7 @@ default_show_entry_popup (RBBrowserSource *source)
        /* update add to playlist menu links */
        g_object_get (source, "playlist-menu", &playlist_menu, NULL);
        rb_menu_update_link (source->priv->popup, "rb-playlist-menu-link", playlist_menu);
-       g_object_unref (playlist_menu);
+       g_clear_object (&playlist_menu);
 
        menu = gtk_menu_new_from_model (G_MENU_MODEL (source->priv->popup));
        gtk_menu_attach_to_widget (GTK_MENU (menu), GTK_WIDGET (source), NULL);