IP lookup: remove used stack variables
IP lookup: remove used stack variables

Change-Id: I19b16d3e04a187ffe736fae868941957c70edf62
Signed-off-by: Neale Ranns <b9c0e9ef0223633bc2f318425f615cf5840a0be7@cisco.com>

FDio/vpp,FDio/vpp,milanlenco/vpp,vpp-dev/vpp,chrisy/vpp,milanlenco/vpp,milanlenco/vpp,FDio/vpp,FDio/vpp,vpp-dev/vpp,vpp-dev/vpp,vpp-dev/vpp,chrisy/vpp,milanlenco/vpp,milanlenco/vpp,vpp-dev/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,vpp-dev/vpp,chrisy/vpp,vpp-dev/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,FDio/vpp,milanlenco/vpp