net/neighbour: fix crash at dumping device-agnostic proxy entries
net/neighbour: fix crash at dumping device-agnostic proxy entries

Proxy entries could have null pointer to net-device.

Signed-off-by: Konstantin Khlebnikov <313328defca653cd422fb17d20c38cc0fb4b890b@gmail.com>
Fixes: 84920c1420e2 ("net: Allow ipv6 proxies and arp proxies be shown with iproute2")
Signed-off-by: David S. Miller <fe08d3c717adf2ae63592e4c9aec6e3e404d8e3e@davemloft.net>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs