Merge branch 'evdns_getaddrinfo-race-fix' * evdns_getaddrinfo-race-fix: evdns: add regress test for getaddrinfo race evdns: fix race condition in evdns_getaddrinfo() Merges: #673 (cherry picked from commit ee12c516cf5766b2c32203dcc20c32b8691a8ebb)