Pull request #1958: refactor: reset取消事件绑定

Merge in VISUAL/fineui from ~KIRA/fineui:master to master

* commit 'a27fa766560073e0da11895caeda546a98c66def':
  refactor: reset取消事件绑定

src/core/4.widget.js

@@ -577,6 +577,7 @@
             // this._isMounted = false;
             // this.purgeListeners();
             this.empty();
+            this.element.unbind();
             this._initCurrent();
             this._init();
             this._mount();