Fix bug, about application collapse by

db can't connect

src/windows/MainWindow.h

@@ -28,12 +28,9 @@ class MainWindow : public QMainWindow
 public:
     explicit MainWindow(QWidget* aParent = nullptr);
     ~MainWindow() override;
-    static  void QMessageOutput(QtMsgType aType, const QMessageLogContext& aContext, const QString& aMessage);
     void centerWidgetHide();
     void centerWidgetShow();
     void requestScreenSaver();
-    QTextEdit* getEdit();
-    void debugConsoleOn();
     void grabGestures(const QList<Qt::GestureType>& aGestures);
 
 public slots:
@@ -60,14 +57,14 @@ private:
 private:
     Ui::MainWindow* mUI;
     QDockWidget* mDebugConsoleWidget;
-    QTextEdit* mDebugMessageConsole;
     QTabWidget* mTabWidget;
     InitializeWidget* mInitializWidget;
     ShutdownWidget* mShutdownWidget;
 
     int mAdminTabIndex;
     QThread* mThread;
-    bool mIsDebugMode;
+    bool mTabInited;
+
 
     void switchToScanTab(QObject* sender, QObject* data);