[IPSEC]: Fix panic when using inter address familiy IPsec on loopback.

Signed-off-by: Kazunori MIYAZAWA <kazunori@miyazawa.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc net/ipv4/xfrm4_input.c
Simple merge

diff --cc net/ipv4/xfrm4_mode_tunnel.c
Simple merge

diff --cc net/ipv6/xfrm6_input.c
Simple merge

diff --cc net/ipv6/xfrm6_mode_tunnel.c
Simple merge