Use right size of addresses in bind() call. Also use getpeername addresses when
connecting to ident service to prevent address family mismatch between socket(),
bind() and connect() calls.

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Christian Schoenebeck via github pull request #205:
Reported for a long time in the web. Still exists in the current sources.
Already reported and offert on TRAC Ticket #15821.

You can find a lot of entries on "Google" about the reported problem.
I got the same error on my WNDR3800 and von VirtualBox X86.
I copied the patch to my local trunk build system and recompiled.
The problem was fixed.

Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Signed-off-by: Jonathan McCrohan <jmccrohan@gmail.com>