rem: host = safeToString(host); 
add: if (typeof host != "string") host = new XPCSafeJSObjectWrapper(host).toString(); 
context: function dnsResolve(host) {    host = safeToString(host);    try {        return dns.resolve(host, 0).getNextAddrAsString();    } catch (e) {        return null;    }}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/9421/1cee9748b43a13fb69361ea14dcd0d027857cf0c/nsProxyAutoConfig.js/buggy/netwerk/base/src/nsProxyAutoConfig.js