Fix issue 78: use the correct address family when creating the listener.
Fix issue 78: use the correct address family when creating the listener.

Patch by: Anders Kaseorg <andersk{_AT_}mit.edu>

* test/server/test_server.c:
  (test_start_server): use address->family rather than APR_UNSPEC

jandre/serf,jandre/serf,jandre/serf,jandre/serf