s3:libsmb_xattr: ace_compare() uses NUMERIC_CMP()

s3:libsmb_xattr: ace_compare() uses NUMERIC_CMP()

the access_mask is the easiest to overflow with subtraction -- other
fields are 8 or 16 bit.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15625

Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Wed Apr 10 23:58:12 UTC 2024 on atb-devel-224

(cherry picked from commit 81598b42455d6758941da532c668b6d4e969cc40)