host = new XPCSafeJSObjectWrapper(host); 
host = XPCSafeJSObjectWrapper(host); 
function dnsResolve(host) {    host = new XPCSafeJSObjectWrapper(host);    try {        return dns.resolve(host, 0).getNextAddrAsString();    } catch (e) {        return null;    }}
5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5459/10e61ce970f7d990e424af5d6cb48d69bba55ba2/nsProxyAutoConfig.js/buggy/netwerk/base/src/nsProxyAutoConfig.js