Fixed error callback when room data could not be loaded.

static/js/controllers/roomchangecontroller.js

@@ -42,8 +42,8 @@ define([], function() {
                 cb(data);
             }).
             error(function() {
-                console.log("Failed to retrieve room link", arguments);
+                console.error("Failed to retrieve room link.");
-                cb(data);
+                cb({});
             });
         };