Issue 6745 - Prefer strict equality operator

lib/downloader.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present 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 296 matching lines @@
     }, false);
 
     request.addEventListener("load", event =>
     {
       if (onShutdown.done)
         return;
 
       this._downloading.delete(downloadable.url);
 
       // Status will be 0 for non-HTTP requests
-      if (request.status && request.status != 200)
+      if (request.status && request.status !== 200)
       {
         errorCallback("synchronize_connection_error");
         return;
       }
 
       downloadable.downloadCount++;
 
       this.onDownloadSuccess(
         downloadable, request.responseText, errorCallback,
         url =>
@@ skipping 85 matching lines @@
    * @type {number}
    */
   hardExpiration: 0,
 
   /**
    * Number indicating how often the object was downloaded.
    * @type {number}
    */
   downloadCount: 0
 };