[gnome-shell] BackgroundCache: plug an Animation object leak

[Rui Matos <rtcm src gnome org>]

commit 260657c0b850112a56d9001abde49d364de95840
Author: Rui Matos <tiagomatos gmail com>
Date:   Mon Oct 27 16:45:31 2014 +0100

    BackgroundCache: plug an Animation object leak
    
    We need to return early in case the animation file is the same,
    otherwise we'll create a new Animation object and leak the previous
    one.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=739252

 js/ui/background.js |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/js/ui/background.js b/js/ui/background.js
index 81d186e..82928e7 100644
--- a/js/ui/background.js
+++ b/js/ui/background.js
@@ -172,6 +172,7 @@ const BackgroundCache = new Lang.Class({
                 }));
                 GLib.Source.set_name_by_id(id, '[gnome-shell] params.onLoaded');
             }
+            return;
         }
 
         let animation = new Animation({ file: params.file });