net: skb cleanup

Can remove anonymous union now it has one field.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 9ef6eb2..7305da9 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -322,9 +322,7 @@
 	ktime_t			tstamp;
 	struct net_device	*dev;
 
-	union {
-		unsigned long		_skb_dst;
-	};
+	unsigned long		_skb_dst;
 #ifdef CONFIG_XFRM
 	struct	sec_path	*sp;
 #endif