rem: var eTLD = eTLDService.getBaseDomainFromHost(this._getSecurityInfo() .hostName); 
add: var eTLD = "";  if (this._getSecurityInfo().hostName) eTLD = eTLDService.getBaseDomainFromHost(this._getSecurityInfo().hostName);  
context:   viewCookies : function()  {    var wm = Components.classes["@mozilla.org/appshell/window-mediator;1"]                       .getService(Components.interfaces.nsIWindowMediator);    var win = wm.getMostRecentWindow("Browser:Cookies");    var eTLDService = Components.classes["@mozilla.org/network/effective-tld-service;1"].                      getService(Components.interfaces.nsIEffectiveTLDService);    var eTLD = eTLDService.getBaseDomainFromHost(this._getSecurityInfo()                                                     .hostName);    if (win) {      win.gCookiesWindow.setFilter(eTLD);      win.focus();    }    else      window.openDialog("chrome://browser/content/preferences/cookies.xul",                        "Browser:Cookies", "", {filterString : eTLD});  },
meta: 10520	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/10520/0f8592759cd9ea9661c46ea0df693daa098bfb21/security.js/clean/browser/base/content/pageinfo/security.js