[IPV4]: esp_output() misannotations

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv4/esp4.c

@@ -168,7 +168,7 @@ static int esp_output(struct xfrm_state *x, struct sk_buff *skb)
 		struct xfrm_encap_tmpl *encap = x->encap;
 		struct udphdr *uh;
 		__be32 *udpdata32;
-		unsigned int sport, dport;
+		__be16 sport, dport;
 		int encap_type;
 
 		spin_lock_bh(&x->lock);