Fix memory leak in processing of ICMPv6 RA event (VPP-1360)
Fix memory leak in processing of ICMPv6 RA event (VPP-1360)

Change-Id: I7c3e5e91391b1c9b36e8ea8bacee9a107da1ae96
Signed-off-by: Juraj Sloboda <00a3e8e35b8aa66e4b3ee1ab4852a3d7bce0da23@cisco.com>

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