add: if (!ispData) return; 
context: function PrefillAccountForIsp(ispName){    dump("AccountWizard.prefillAccountForIsp(" + ispName + ")\n");    var ispData = getIspDefaultsForUri(ispName);        var pageData = GetPageData();    // prefill the rest of the wizard    dump("PrefillAccountForISP: filling with " + ispData + "\n");    SetCurrentAccountData(ispData);    AccountDataToPageData(ispData, pageData);}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/fd5c4fa27c1c397e5770a27185b1fa6ebee8b8a9/AccountWizard.js/buggy/mailnews/base/prefs/resources/content/AccountWizard.js