adblockplusopera: Fix error occuring when updating from AdBlock for Chrome

background.js

 /*
  * This file is part of the Adblock Plus extension,
  * Copyright (C) 2006-2012 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
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-require("matcher").init();
+var matcher = require("matcher");
+matcher.init();
+
 with(require("filterClasses"))
 {
   this.Filter = Filter;
   this.WhitelistFilter = WhitelistFilter;
 }
 with(require("subscriptionClasses"))
 {
   this.Subscription = Subscription;
   this.DownloadableSubscription = DownloadableSubscription;
 }
 var FilterNotifier = require("filterNotifier").FilterNotifier;
 var FilterStorage = require("filterStorage").FilterStorage;
 var ElemHide = require("elemHide").ElemHide;
-var defaultMatcher = require("matcher").defaultMatcher;
+var defaultMatcher = matcher.defaultMatcher;
 var Synchronizer = require("synchronizer").Synchronizer;
 
 var isFirstRun = false;
 FilterNotifier.addListener(function(action)
 {
   if (action == "load")
   {
     importOldData();
     if (!window.localStorage.currentVersion)
     {
@@ skipping 242 matching lines @@
       var selectors = ElemHide.getSelectorsForDomain(host, false);
       event.source.postMessage({reqtype: "get-settings-response", selectors: selectors});
       break;
   }
 }, false);
 
 setDefaultOptions();
 createToolbarButton();
 refreshToolbarButton();
 loadI18nMessages();