res_randomid() is marked as deprecated in newer glibc.

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Wed Dec 21 21:28:42 UTC 2022 on sn-devel-184