[DCCP]: Use DEFINE_PROTO_INUSE infrastructure.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
index 62428ff..87c98fb 100644
--- a/net/dccp/ipv6.c
+++ b/net/dccp/ipv6.c
@@ -1107,6 +1107,8 @@
 	.twsk_obj_size	= sizeof(struct dccp6_timewait_sock),
 };
 
+DEFINE_PROTO_INUSE(dccp_v6)
+
 static struct proto dccp_v6_prot = {
 	.name		   = "DCCPv6",
 	.owner		   = THIS_MODULE,
@@ -1135,6 +1137,7 @@
 	.compat_setsockopt = compat_dccp_setsockopt,
 	.compat_getsockopt = compat_dccp_getsockopt,
 #endif
+	REF_PROTO_INUSE(dccp_v6)
 };
 
 static struct inet6_protocol dccp_v6_protocol = {