small changes of BusyIcon

libs/widgets/busy_icon.cpp

@@ -15,7 +15,6 @@ BusyIcon::~BusyIcon() {}
 
 void BusyIcon::start() {
 	stop();
-	ang   = 0;
 	timer = startTimer(25);
 }
 

libs/widgets/busy_icon.h

@@ -33,9 +33,9 @@ public:
 	void setCircleWidth(qreal s);
 
 private:
-	QSize sizeHint() const;
-	void timerEvent(QTimerEvent *);
-	void paintEvent(QPaintEvent *);
+	QSize sizeHint() const override;
+	void timerEvent(QTimerEvent *) override;
+	void paintEvent(QPaintEvent *) override;
 
 	QIcon icon_;
 	QImage image;