tds_socketpair on windows

Hi,

I'm trying to build a recent version of Freets on win32 and win64 but run
into problems with tds_socketpair. After adding a few new files to the
Visual Studio project (dbpivot.c and socketpair.c) it build fine on win64
and win32. But when calling tdsdbopen the libraries return a SYBEMEM. After
some debugging found out that the listen call (socketpair.c:65) fails. The
error returned with WSAGetLastError is WSAEOPNOTSUPP which is normal since
listen on a SOCK_DGRAM socket is not needed/supported.
Don't know what the changes to mem.c in revision 1.223 are trying to solve
but the result fails both on win32 XP sp2 and win64 win7. Can I revert this
change to mem.c locally or has this change ramifications in other source
files? 

Thanks, Ludo