[NET]: Shave sizeof(ptr) bytes off dst_entry

Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/net/dst.h

@@ -42,7 +42,8 @@ struct dst_entry
 	int			__use;
 	struct dst_entry	*child;
 	struct net_device       *dev;
-	int			obsolete;
+	short			error;
+	short			obsolete;
 	int			flags;
 #define DST_HOST		1
 #define DST_NOXFRM		2
@@ -61,8 +62,6 @@ struct dst_entry
 	unsigned long		rate_last;	/* rate limiting for ICMP */
 	unsigned long		rate_tokens;
 
-	int			error;
-
 	struct neighbour	*neighbour;
 	struct hh_cache		*hh;
 	struct xfrm_state	*xfrm;