Fix address_len() for HOSTNAME addresses
Fix address_len() for HOSTNAME addresses

Didn't include the null byte string terminator in the Address struct
size. Fixes #80.

balyanrobin/sniproxy,deeper-think/sniproxy,dlundquist/sniproxy,balyanrobin/sniproxy,dlundquist/sniproxy,dlundquist/sniproxy,0xa/sniproxy,balyanrobin/sniproxy,0xa/sniproxy,txt3rob/sniproxy,txt3rob/sniproxy,dlundquist/sniproxy,deeper-think/sniproxy,txt3rob/sniproxy,deeper-think/sniproxy,0xa/sniproxy,balyanrobin/sniproxy,0xa/sniproxy