ipv4: Pass explicit saddr/daddr args to ipmr_get_route().

This eliminates the need to use rt->rt_{src,dst}.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/mroute.h b/include/linux/mroute.h
index b21d567..46caaf4 100644
--- a/include/linux/mroute.h
+++ b/include/linux/mroute.h
@@ -244,6 +244,7 @@
 #ifdef __KERNEL__
 struct rtmsg;
 extern int ipmr_get_route(struct net *net, struct sk_buff *skb,
+			  __be32 saddr, __be32 daddr,
 			  struct rtmsg *rtm, int nowait);
 #endif