net: Make dst_alloc() take more explicit initializations.

Now the dst->dev, dev->obsolete, and dst->flags values can
be specified as well.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 15792d8..70552c4 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -1348,7 +1348,7 @@
 	default:
 		BUG();
 	}
-	xdst = dst_alloc(dst_ops, 0);
+	xdst = dst_alloc(dst_ops, NULL, 0, 0, 0);
 	xfrm_policy_put_afinfo(afinfo);
 
 	if (likely(xdst))