[NET]: Make code static.

This patch makes needlessly global code static.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/fib_rules.c b/net/ipv4/fib_rules.c
index 23ec6ae..03d1e8a 100644
--- a/net/ipv4/fib_rules.c
+++ b/net/ipv4/fib_rules.c
@@ -101,8 +101,8 @@
 	return err;
 }
 
-int fib4_rule_action(struct fib_rule *rule, struct flowi *flp, int flags,
-		     struct fib_lookup_arg *arg)
+static int fib4_rule_action(struct fib_rule *rule, struct flowi *flp,
+			    int flags, struct fib_lookup_arg *arg)
 {
 	int err = -EAGAIN;
 	struct fib_table *tbl;