app/regex: fix number of matches

app/regex: fix number of matches

Depending on number of jobs specified on command line, part of the
data buffer may not get searched, resulting in incorrect number of
matches being reported.

Additional change to ensure the "All Matches" summary outputs the
correct match start locations in the supplied data buffer.

Fixes: de06137cb295 ("app/regex: add RegEx test application")
Cc: stable@dpdk.org
Signed-off-by: Gerry Gribbon <ggribbon@nvidia.com>
Acked-by: Ori Kam <orika@nvidia.com>