Return empty reponse on timeouts with async too
Return empty reponse on timeouts with async too

shane-kerr/getdns,Acidburn0zzz/getdns,Acidburn0zzz/getdns,glenwiley/getdns,huitema/getdns,huitema/getdns,shane-kerr/getdns,smogali/getdns,glenwiley/getdns,shane-kerr/getdns,Acidburn0zzz/getdns,glenwiley/getdns,smogali/getdns,huitema/getdns,dkg/getdns,smogali/getdns,dkg/getdns,dkg/getdns,dkg/getdns,huitema/getdns,smogali/getdns,Acidburn0zzz/getdns,shane-kerr/getdns,glenwiley/getdns