OS don't have AF_LOCAL - in smbldap.c svn r5522

[Doug VanLeuven]

AIX 5.2, no working AF_LOCAL so
lib/smbldap.c:891: error: `AF_LOCAL' undeclared (first use in this function)

- getpeername(sd, (struct sockaddr *) &addr, &len) < 0) {
+ ((getpeername(sd, (struct sockaddr *) &addr, &len) < 0) || 
addr.sun_family == AF_LOCAL)) {

For now I'm just ifdef'ing the new comparison .  Is there a better way?
#ifdef HAVE_WORKING_AF_LOCAL
   || addr.sun_family == AF_LOCAL
#endif
    )) {