[XFRM] netlink: Enhance indexing of the attribute array

nlmsg_parse() puts attributes at array[type] so the indexing
method can be simpilfied by removing the obscuring "- 1".

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 file changed