miniupnpd/pcpserver.c: ext_port field was not set in the (IPv6) firewall reply packet. Now setting it to int_port.
Merge pull request #78 from fingon/ext-port-not-set-in-ipv6-fw-pcp-reply

miniupnpd/pcpserver.c: ext_port field was not set in the (IPv6) firewall reply packet