More clear way to assign middleware in controller

Assign guest middleware to LoginController using documented way https://laravel.com/docs/5.4/controllers#controller-middleware 
to avoid confusing with $options array values meaning.

app/Http/Controllers/Auth/LoginController.php

@@ -34,6 +34,6 @@ class LoginController extends Controller
      */
     public function __construct()
     {
-        $this->middleware('guest', ['except' => 'logout']);
+        $this->middleware('guest')->except('logout');
     }
 }