ff5bacf17c
The 'refresh_rrset' variable is used to determine if we can detach from the client. This can cause a hang on shutdown. To fix this, move setting of the 'nodetach' variable up to where 'refresh_rrset' is set (in query_lookup(), and thus not in ns_query_done()), and set it to false when actually refreshing the RRset, so that when this lookup is completed, the client will be detached.