[IPV4/IPV6/DECNET]: Small cleanup for fib rules.

This patch slightly cleanups FIB rules framework. rules_list as a pointer
on struct fib_rules_ops is useless. It is always assigned with a static
per/subsystem list in IPv4, IPv6 and DecNet.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Acked-by: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/fib_rules.h b/include/net/fib_rules.h
index 83e41dd..017aebd 100644
--- a/include/net/fib_rules.h
+++ b/include/net/fib_rules.h
@@ -65,7 +65,7 @@
 
 	int			nlgroup;
 	const struct nla_policy	*policy;
-	struct list_head	*rules_list;
+	struct list_head	rules_list;
 	struct module		*owner;
 };