CONTRIB: halog: mark the has_zero* functions unused

These ones will depend on the use of memchr() or not, let's mark them unused
to avoid the warning reported in issue #1013.

(cherry picked from commit f531dfff18becc87a3855ae6bc987afe9bffccc3)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
1 file changed