[NETFILTER] Remove nf_conntrack stat proc file when cleaning up

Fix nf_conntrack statistics proc file removal. Looks like the old bug
was forward-ported from ip_conntrack. :-]

Signed-off-by: KOVACS Krisztian <hidden@balabit.hu>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c
index 45224db..5af381f 100644
--- a/net/netfilter/nf_conntrack_standalone.c
+++ b/net/netfilter/nf_conntrack_standalone.c
@@ -694,7 +694,7 @@
  cleanup_proc_stat:
 #endif
 #ifdef CONFIG_PROC_FS
-	proc_net_remove("nf_conntrack_stat");
+	remove_proc_entry("nf_conntrack", proc_net_stat);
  cleanup_proc_exp:
 	proc_net_remove("nf_conntrack_expect");
  cleanup_proc: