[BRIDGE]: Better fix for netfilter missing symbol has_bridge_parent

Horms patch was the best of the three fixes. Dave, already applied
Harald's version, so this patch converts that to the better one.

Signed-off-by: Stephen Hemminger <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/bridge/br_netfilter.c

···
 print_error:
 	if (skb->dev != NULL) {
 		printk("[%s]", skb->dev->name);
-		if (bridge_parent(skb->dev))
-			printk("[%s]", bridge_parent(skb->dev)->name);
+		if (realoutdev)
+			printk("[%s]", realoutdev->name);
 	}
 	printk(" head:%p, raw:%p, data:%p\n", skb->head, skb->mac.raw,
 					      skb->data);