MAGETWO-45093: Magento is stuck in Maintenance mode if Backup is created during disabling module via Web Setup Wizard

- CR fixes

Author: Ivan Gavryshko

setup/src/Magento/Setup/Model/Cron/JobComponentUninstall.php

@@ -39,7 +39,7 @@ class JobComponentUninstall extends AbstractJob
     /**
      * @var \Magento\Framework\ObjectManagerInterface
      */
-    private $objectManager;
+    protected $objectManager;
 
     /**
      * @var \Magento\Setup\Model\Updater

setup/src/Magento/Setup/Mvc/Bootstrap/InitParamListener.php

@@ -41,7 +41,7 @@ class InitParamListener implements ListenerAggregateInterface, FactoryInterface
     private $listeners = [];
 
     /**
-     * List of controllers which should be skipped
+     * List of controllers which should be skipped from auth check
      *
      * @var array
      */
@@ -135,14 +135,8 @@ public function authPreDispatch($event)
                     $response = $event->getResponse();
                     $response->getHeaders()->addHeaderLine('Location', 'index.php/session/unlogin');
                     $response->setStatusCode(302);
-                    $response->sendHeaders();
 
-                    $stopCallBack = function($event) use ($response) {
-                        $event->stopPropagation();
-                        return $response;
-                    };
-
-                    $application->getEventManager()->attach(MvcEvent::EVENT_ROUTE, $stopCallBack, -10000);
+                    $event->stopPropagation();
                     return $response;
                 }
             }