Fix a memleak when lookup of SA fails during forwarding of encrypted IPv6 pakets.
Fix a memleak when lookup of SA fails during forwarding of encrypted IPv6
pakets.

ok mpi@ markus@ mikeb@

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars