io_uring/net: use 'ctx' consistently

There's already a local ctx variable, use it for the io_is_compat()
check as well.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

Author: axboe

io_uring/net.c

@@ -1375,7 +1375,7 @@ int io_send_zc_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
 	if (zc->msg_flags & MSG_DONTWAIT)
 		req->flags |= REQ_F_NOWAIT;
 
-	if (io_is_compat(req->ctx))
+	if (io_is_compat(ctx))
 		zc->msg_flags |= MSG_CMSG_COMPAT;
 
 	iomsg = io_msg_alloc_async(req);