ensure application is closed when window is closed

src/mainwindow.cpp

@@ -38,3 +38,5 @@ void MainWindow::fullScreenRequested(
   fullScreenRequest.accept();
   fullScreenRequest.toggleOn() ? showFullScreen() : showNormal();
 }
+
+void MainWindow::closeEvent(QCloseEvent *event) { QApplication::quit(); }

src/mainwindow.h

@@ -21,6 +21,7 @@ private:
   QWebEngineView *m_webView;
   QWebEngineProfile *prepareProfile();
   DiscordPage *m_discordPage;
+  void closeEvent(QCloseEvent *event) override;
 
 private Q_SLOTS:
   void fullScreenRequested(QWebEngineFullScreenRequest fullScreenRequest);