ActionManager: Avoid losing shortcuts when actions are unregistered

Since the action for this ID might be unregistered temporarily, and re-
registered under different circumstances.

Change-Id: I6c4ef3ddf814487cc9b63ff979ebb1539cdf7c81
Task-number: QTCREATORBUG-8108
Reviewed-by: David Schulz <david.schulz@theqtcompany.com>

src/plugins/coreplugin/mainwindow.cpp

@@ -985,7 +985,7 @@ void MainWindow::writeSettings()
     settings->endGroup();
 
     DocumentManager::saveSettings();
-    ActionManager::saveSettings(settings);
+    ActionManager::saveSettings();
     EditorManagerPrivate::saveSettings();
     m_navigationWidget->saveSettings(settings);
 }