fix style

Author: themsaid

src/Illuminate/Queue/QueueServiceProvider.php

@@ -166,7 +166,7 @@ protected function registerWorker()
                 return $this->app->isDownForMaintenance();
             };
 
-            $scopeResetter = function () use ($app){
+            $scopeResetter = function () use ($app) {
                 return $app->resetScope();
             };