mbuf: cleanup function to get last segment
mbuf: cleanup function to get last segment

There is no reason to have local variable m2.

Fixes: af75078fece3 ("first public release")

Signed-off-by: Ilya V. Matveychikov <237969d42151798419f985d72d029c2d19dc74da@gmail.com>
Acked-by: Olivier Matz <dfcc1510895413197abb4336e39bb0a3906cba71@6wind.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk