[IPV6]: Fix unbalanced socket reference with MSG_CONFIRM.

Signed-off-by: NYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv6/raw.c

@@ -882,11 +882,10 @@ static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
 			ip6_flush_pending_frames(sk);
 		else if (!(msg->msg_flags & MSG_MORE))
 			err = rawv6_push_pending_frames(sk, &fl, rp);
+		release_sock(sk);
 	}
 done:
 	dst_release(dst);
-	if (!inet->hdrincl)
-		release_sock(sk);
 out:
 	fl6_sock_release(flowlabel);
 	return err<0?err:len;