When checking traffic endpoint's adresses families in key_spdadd(), compare them together instead of comparing each one with respective tunnel endpoint.
When checking traffic endpoint's adresses families in key_spdadd(),
compare them together instead of comparing each one with respective
tunnel endpoint.

PR:	kern/138439
Submitted by:	aurelien.ansel@netasq.com
Obtained from:	NETASQ
MFC after:	1 m

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase