Fixing potential crash when the task loader is stopped. (Bug 18135583)

                }

            } else {

                SystemServicesProxy ssp = mSystemServicesProxy;

                // If we've stopped the loader, then fall thorugh to the above logic to wait on

                // the load thread

                if (ssp == null) continue;

                // Load the next item from the queue

                final Task t = mLoadQueue.nextTask();