ipfix-export: don't check the result of pool_get
ipfix-export: don't check the result of pool_get

The code to check the exp is set after the call to pool_get()
is marked as unreachable in coverity. This is becasue if it
fails in pool_get then the it panics. Remove the unreachable code.

Type: fix
Signed-off-by: Paul Atkins <bd156abe841cbed4bdcc19e9b73d63734967d2c5@graphiant.com>
Change-Id: Iabb51b6b6788b6c12ef37c28dde2118c798de831

chrisy/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,FDio/vpp