[DCCP]: Fix leak in net/dccp/ipv4.c

we dont free req if we cant parse the options.
This fixes coverity bug id #1046
Signed-off-by: NEric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/dccp/ipv4.c

@@ -498,7 +498,7 @@ int dccp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
 		goto drop;
 
 	if (dccp_parse_options(sk, skb))
-		goto drop;
+		goto drop_and_free;
 
 	dccp_openreq_init(req, &dp, skb);