[PATCH] [TRIVIAL] ip_nat_core.c - fix compiler warning

If netfilter is build w/o CONFIG_IP_NF_NAT_LOCAL, gcc will complain that
do_extra_mangle() is not used.  So only compile the function when
IP_NF_NAT_LOCAL is defined.  Patch is against 2.4.19-pre10.

Rob.

--- linux-clean/net/ipv4/netfilter/ip_nat_core.c	Fri Jun  7 23:42:15 2002
+++ linux-dirty/net/ipv4/netfilter/ip_nat_core.c	Sat Jun  8 12:12:46 2002
@@ -198,6 +198,7 @@
 		return NULL;
 }
 
+#ifdef CONFIG_IP_NF_NAT_LOCAL
 /* If it's really a local destination manip, it may need to do a
    source manip too. */
 static int
@@ -216,6 +217,7 @@
 	ip_rt_put(rt);
 	return 1;
 }
+#endif
 
 /* Simple way to iterate through all. */
 static inline int fake_cmp(const struct ip_nat_hash *i,