Pull request #1534: 无JIRA fix: 修复问题

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

* commit '84daf0e0fca368eeb8d0a62993d8a8e600466bd7':
  无JIRA fix: 修复问题

src/base/single/iframe/iframe.js

@@ -23,6 +23,7 @@ BI.Iframe = BI.inherit(BI.Single, {
     },
 
     _init: function () {
+        var self = this;
         BI.Iframe.superclass._init.apply(this, arguments);
         this.element.on("load", function () {
             self.fireEvent("EVENT_LOADED");