udp: remove blank line between set and test

Suggested-by: NJoe Perches <joe@perches.com>
Signed-off-by: NFabian Frederick <fabf@skynet.be>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv4/udp.c

@@ -1784,7 +1784,6 @@ int __udp4_lib_rcv(struct sk_buff *skb, struct udp_table *udptable,
 				saddr, daddr, udptable);
 
 	sk = __udp4_lib_lookup_skb(skb, uh->source, uh->dest, udptable);
-
 	if (sk != NULL) {
 		int ret;