Merge pull request PrismLauncher#3074 from Trial97/lock

Close the window using the invokeMethod to not block

launcher/Application.cpp

@@ -1507,7 +1507,7 @@ void Application::controllerSucceeded()
     // on success, do...
     if (controller->instance()->settings()->get("AutoCloseConsole").toBool()) {
         if (extras.window) {
-            extras.window->close();
+            QMetaObject::invokeMethod(extras.window, &QWidget::close, Qt::QueuedConnection);
         }
     }
     extras.controller.reset();