bug 67790 r=walk84 sr=alecf

js warning in bookmarksOverlay.js

xpfe/components/bookmarks/resources/bookmarksOverlay.js

@@ -854,7 +854,7 @@ var BookmarksUtils = {
       RDFC.Init(BMDS, aParentFolder);
     }
     catch (e) {
-      return;
+      return null;
     }
     var ix = kRDFC.IndexOf(aRelativeItem);