增加计数器销毁条件

src/components/app-mob-menu-ionic-view/app-mob-menu-ionic-view.vue

@@ -101,7 +101,9 @@ export default class AppMobMenuIonicView extends Vue {
      * @memberof AppMobMenuIonicView
      */
     public destroyed() {
-        this.counterServide.destroyCounter();
+        if(this.counterServide){
+            this.counterServide.destroyCounter();
+        }
     }
 
     /**