When allocating multi segmented buffers, and in case there is
a remainder in total buf len, the actual job len might be more
than expected job_len.
This adds additional space in the mbuf in the multi seg case,
to allow the remaining memory to be stored in one segment.
Fixes: c1d1b94eec ("app/regex: fix number of matches")
Cc: stable@dpdk.org
Signed-off-by: Raslan Darawsheh <rasland@nvidia.com>
Acked-by: Ori Kam <orika@nvidia.com>