Applied changes from emailed code review

lib/survey.js

 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
  * You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 Cu.import("resource://gre/modules/Services.jsm");
 
 let {Prefs} = require("prefs");
 
 let surveyLang = null;
 let surveyUrl = null; //"http://urlfixer.org/usersurvey/...";
@@ skipping 60 matching lines @@
     {
       openSurvey();
       panel.hidePopup();
     });
     document.getElementById("url-fixer-cancel-button").addEventListener("command", function()
     {
       panel.hidePopup();
     });
     panel.addEventListener("popuphidden", function()
     {
       panel.parentNode.removeChild(panel);

[Wladimir Palant, 2012/09/28 13:31:26]

Please remove the style node as well.

+      style.parentNode.removeChild(style);
     });
 
     let anchor = document.getElementById("identity-box");
     panel.openPopup(anchor, "after_start", 0, 0, false, true);
   }, false);
   request.send(null);
 }
 
 function openSurvey()
 {
   let window = Services.wm.getMostRecentWindow("navigator:browser");
   if (window)
   {
     let browser = require("appIntegration").getBrowser(window);
     browser.loadOneTab(surveyUrl + "&lang=" + surveyLang, {
         referrerURI: Services.io.newURI("http://url.fixer/", null, null),
         inBackground: false
     });
   }
 }