[UDP]: Use __skb_pull since we have checked it won't fail with pskb_may_pull

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/udp.c

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index ca35380..1bbf551 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1002,7 +1002,7 @@
 	 * transport header to point to ESP.  Keep UDP on the stack
 	 * for later.
 	 */
-	skb->h.raw = skb_pull(skb, len);
+	skb->h.raw = __skb_pull(skb, len);
 
 	/* modify the protocol (it's ESP!) */
 	iph->protocol = IPPROTO_ESP;