netlink: fix monitor trace crash with netdev family

nft monitor trace crashes on first packet with:

table netdev filter {
  chain foobar {
    type filter hook ingress device eth0 priority 0;
    udp sport 53 meta nftrace set 1
  }
}

We did not handle netdev family and thus generated bogus payload
statements without data types.

Netfilter Bugzilla: http://bugzilla.netfilter.org/show_bug.cgi?id=1092
Signed-off-by: Florian Westphal <fw@strlen.de>

0 files changed, 0 insertions, 0 deletions