potyl/perl-AnyEvent-CacheDNS — pull request #3 by zhurs (2013-07-02 20:30:06+00:00)
Title: Fix for case of not existent domain and new AnyEvent

Expression "$_[0]->[3]" changes variable @_, if its empty, so we pass incorrect data to callback
Problem appears on ipv4/ipv6 environment, when target domain has not AAAA record