Issue 1724 - Fixed memory leak in messaging code, when no response is sent, on Safari

safari/ext/background.js

 /*
  * This file is part of Adblock Plus <http://adblockplus.org/>,
  * Copyright (C) 2006-2014 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 588 matching lines @@
               }
 
               frameId = page._frames.length;
               page._frames.push({url: message.url, parent: parentFrame});
             }
 
             event.message = {pageId: pageId, frameId: frameId};
             break;
           case "webRequest":
             var page = pages[event.message.pageId];
-
-            event.message = ext.webRequest.onBeforeRequest._dispatch(
+            var results = ext.webRequest.onBeforeRequest._dispatch(
               event.message.url,
               event.message.type,
               page,
               page._frames[event.message.frameId]
             );
+
+            event.message = (results.indexOf(false) == -1);
             break;
           case "proxy":
             event.message = backgroundPageProxy.handleMessage(event.message);
             break;
           case "request":
             var page = pages[event.message.pageId];
             var sender = {page: page, frame: page._frames[event.message.frameId]};
 
             var response = null;
             var sendResponse = function(message) { response = message; };
@@ skipping 45 matching lines @@
         page.activate();
         if (callback)
           callback(page);
         return;
       }
     }
 
     ext.pages.open(optionsUrl, callback);
   };
 })();