bug 5511: recompute the DNS lookup deadline after every call to {async}->complete_lookups(), to avoid timing out too early; also, never allow the deadline to be recomputed to 0 in contradiction of the documentation. thanks to Mark Martinec
bug 5511: recompute the DNS lookup deadline after every call to {async}->complete_lookups(), to avoid timing out too early; also, never allow the deadline to be recomputed to 0 in contradiction of the documentation. thanks to Mark Martinec

git-svn-id: e9fe9b84e32fc5e57b7d09c40cd78b14ea28ed71@547344 13f79535-47bb-0310-9956-ffa450edef68

apache/spamassassin,apache/spamassassin,apache/spamassassin,apache/spamassassin,apache/spamassassin