CONTRIB: halog: fix signed/unsigned build warnings on counts and timestamps

Some variables were signed while they were compared to unsigned ones,
causing warnings to be issued when -Wextra is enabled.

(cherry picked from commit 03ca6054d02350e83cb5227608ccec13efdd3ade)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
1 file changed