BUG/MINOR: flt-trace: fix an infinite loop when random-parsing is set

The issue is introduced with the commit c41d8bd65 ("CLEANUP: flt-trace:
Remove unused random-parsing option").

This must be backported everywhere the above commit is.

(cherry picked from commit a8018eb470f3299d1658abdd2ba1a1d0091ca8e8)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
1 file changed