rem: return defaultValue; 
add: ret = defaultValue; 
context: function getPref(prefName, defaultValue){    const nsIPrefBranch = Components.interfaces.nsIPrefBranch;    var prefBranch = Components.classes["@mozilla.org/preferences-service;1"]                     .getService(nsIPrefBranch);    try {        switch (prefBranch.getPrefType(prefName)) {        case nsIPrefBranch.PREF_BOOL:            return prefBranch.getBoolPref(prefName);        case nsIPrefBranch.PREF_INT:            return prefBranch.getIntPref(prefName);        case nsIPrefBranch.PREF_STRING:            return prefBranch.getCharPref(prefName);        default:            return defaultValue;        }    }    catch (exc) {        return defaultValue;    }}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/8395/a8adf4992620da379274cea3395ed3099b6769d6/calWcapUtils.js/buggy/calendar/providers/wcap/calWcapUtils.js