memcached_behavior_get fails with EINPROGRESS

[Mark Atwood]

Building and running make test on Ubuntu Jaunty on EC2 (ami-0d729464), fails with

lt-testapp: function.c:1707: behavior_test: Assertion `value > 0' failed.

Investigation shows that in ./libmemcached/memcached_behavior.c the code

      if (getsockopt(ptr->hosts[0].fd, SOL_SOCKET,
                     SO_SNDBUF, &sock_size, &sock_length))
        return 0; /* Zero means error */

fails, and errno is set to EINPROGRESS