ipv4: Fix nexthop caching wrt. scoping.

Move the scope value out of the fib alias entries and into fib_info,
so that we always use the correct scope when recomputing the nexthop
cached source address.

Reported-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h
index cd92b92..e5d66ec 100644
--- a/include/net/ip_fib.h
+++ b/include/net/ip_fib.h
@@ -51,7 +51,6 @@
 	struct fib_info		*nh_parent;
 	unsigned		nh_flags;
 	unsigned char		nh_scope;
-	unsigned char		nh_cfg_scope;
 #ifdef CONFIG_IP_ROUTE_MULTIPATH
 	int			nh_weight;
 	int			nh_power;
@@ -75,9 +74,10 @@
 	struct net		*fib_net;
 	int			fib_treeref;
 	atomic_t		fib_clntref;
-	int			fib_dead;
 	unsigned		fib_flags;
-	int			fib_protocol;
+	unsigned char		fib_dead;
+	unsigned char		fib_protocol;
+	unsigned char		fib_scope;
 	__be32			fib_prefsrc;
 	u32			fib_priority;
 	u32			*fib_metrics;