Set KAuth parent widget.

src/gui/mainwindow.cpp

@@ -137,6 +137,7 @@ void MainWindow::init()
     loadConfig();
 
     show();
+    ExternalCommand::setParentWidget(this);
     pmWidget().init(&operationStack());
 
     scanDevices();

src/main.cpp

@@ -84,7 +84,7 @@ int Q_DECL_IMPORT main(int argc, char* argv[])
         return 0;
 
     MainWindow* mainWindow = new MainWindow();
-    Q_UNUSED(mainWindow);
+    Q_UNUSED(mainWindow)
 
     return app.exec();
 }