Fix imageswitch icon bug.

src/components/imageswitch.h

@@ -26,7 +26,8 @@ public:
     enum ButtonStyle {
         ButtonStyle_1 = 0,  //开关样式1
         ButtonStyle_2 = 1,  //开关样式2
-        ButtonStyle_3 = 2   //开关样式3
+        ButtonStyle_3 = 2,   //开关样式3
+        None = 3   //开关样式3
     };
 
     explicit ImageSwitch(QWidget *parent = 0);
@@ -37,7 +38,7 @@ protected:
 
 private:
     bool isChecked;
-    ButtonStyle buttonStyle;
+    ButtonStyle buttonStyle = None;
 
     QString imgOffFile;
     QString imgOnFile;