Don't dispatch a "load" event for blocked frames on Safari

safari/ext/content.js

 /*
  * This file is part of Adblock Plus <http://adblockplus.org/>,
  * Copyright (C) 2006-2013 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 310 matching lines @@
           url: event.url,
           type: type,
           documentUrl: document.location.href,
           isTopLevel: window == window.top
         }
       }
     ))
     {
       event.preventDefault();
 
-      // Safari doesn't dispatch an "error" or "load" event when preventing an
-      // element from loading by cancelling the "beforeload" event. So we have
-      // to dispatch it manually. Otherwise element collapsing wouldn't work.
-      var evt = document.createEvent("Event");
-      evt.initEvent(type == "sub_frame" ? "load" : "error");
-      event.target.dispatchEvent(evt);
+      // Safari doesn't dispatch an "error" event when preventing an element
+      // from loading by cancelling the "beforeload" event. So we have to
+      // dispatch it manually. Otherwise element collapsing wouldn't work.
+      if (type != "sub_frame")
+      {
+        var evt = document.createEvent("Event");
+        evt.initEvent("error");
+        event.target.dispatchEvent(evt);
+      }
     }
   }, true);
 
 
   /* API */
 
   ext.backgroundPage = {
     sendMessage: function(message, responseCallback)
     {
       _sendMessage(
@@ skipping 18 matching lines @@
   // so we need to add it to the event's user info.
   document.addEventListener("contextmenu", function(event)
   {
     var element = event.srcElement;
     safari.self.tab.setContextMenuEventUserInfo(event, {
       srcUrl: ("src" in element) ? element.src : null,
       tagName: element.localName
     });
   }, false);
 })();