[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/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 8140bed..1b2902d 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -3031,9 +3031,12 @@
 	nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*pmsg), flags);
 	pmsg = NLMSG_DATA(nlh);
 	pmsg->prefix_family = AF_INET6;
+	pmsg->prefix_pad1 = 0;
+	pmsg->prefix_pad2 = 0;
 	pmsg->prefix_ifindex = idev->dev->ifindex;
 	pmsg->prefix_len = pinfo->prefix_len;
 	pmsg->prefix_type = pinfo->type;
+	pmsg->prefix_pad3 = 0;
 	
 	pmsg->prefix_flags = 0;
 	if (pinfo->onlink)