[IPV6]: export inet6_sock_nr

Please apply, SCTP/DCCP needs this when INET_REFCNT_DEBUG
is set.

Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 768b117..53a6680 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -88,6 +88,7 @@
 
 #ifdef INET_REFCNT_DEBUG
 atomic_t inet6_sock_nr;
+EXPORT_SYMBOL(inet6_sock_nr);
 #endif
 
 /* The inetsw table contains everything that inet_create needs to