[NETLINK]: Missing padding fields in dumped structures

Plug holes with padding fields and initialized them to zero.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/pkt_cls.h b/include/linux/pkt_cls.h
index 25d2d67..bd2c5a2 100644
--- a/include/linux/pkt_cls.h
+++ b/include/linux/pkt_cls.h
@@ -276,6 +276,7 @@
 	__u8	protocol;
 	__u8	tunnelid;
 	__u8	tunnelhdr;
+	__u8	pad;
 };
 
 /* ROUTE filter */