[PATCH net-next] net: skbuff.h: fix using plain integer as NULL warning

Fixes the following sparse warning:
./include/linux/skbuff.h:2365:58: warning: Using plain integer as NULL pointer

Signed-off-by: YueHaibing <redacted>
---
 include/linux/skbuff.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 7ebdf15..7e237a6 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h

@@ -2362,7 +2362,7 @@ static inline void skb_probe_transport_header(struct sk_buff *skb,
 	if (skb_transport_header_was_set(skb))
 		return;
 
-	if (skb_flow_dissect_flow_keys_basic(skb, &keys, 0, 0, 0, 0, 0))
+	if (skb_flow_dissect_flow_keys_basic(skb, &keys, NULL, 0, 0, 0, 0))
 		skb_set_transport_header(skb, keys.control.thoff);
 	else
 		skb_set_transport_header(skb, offset_hint);

-- 
2.7.0

From: YueHaibing <redacted>
Date: Wed, 8 Aug 2018 19:40:31 +0800

Fixes the following sparse warning:
./include/linux/skbuff.h:2365:58: warning: Using plain integer as NULL pointer

Signed-off-by: YueHaibing <redacted>

Applied.