Inconsistent Redirect

This controller has an inconsistent redirect mechanism (than other controllers in admin-notification).  This means that if the admin has a different URL, the admin user is returned to the frontend URL of the default store instead.

Author: chickenland

app/code/Magento/AdminNotification/Controller/Adminhtml/Notification/MassRemove.php

@@ -39,6 +39,7 @@ public function execute()
                 $this->messageManager->addException($e, __("We couldn't remove the messages because of an error."));
             }
         }
-        $this->getResponse()->setRedirect($this->_redirect->getRedirectUrl($this->getUrl('*')));
+        $this->_redirect('adminhtml/*/');
+        return;
     }
 }