send 'correct' sockaddr lengths to socket calls

FreeBSD-devel insists that the length passed into socket calls
matches the expected length of the sockaddr it describes.
So, eg, when passing a sockaddr_in, the length must be sizeof(sockaddr_in)
rather than sizeof(sockaddr_storage) which we were using

Signed-Off-By: Chrissie Caulfield <ccaulfie@redhat.com>