From d38b4737fde16d59b56847c8c5b50e97285a809f Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Wed, 8 Aug 2018 14:43:26 +0200
Subject: [PATCH] windows: follow up to the buffer-tuning 1ba1dba7

Somehow I didn't include the amended version of the previous fix. This
is the missing piece.

Pointed-out-by: Viktor Szakats
---
 lib/transfer.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/transfer.c b/lib/transfer.c
index 1d33e861a..49f32568f 100644
--- a/lib/transfer.c
+++ b/lib/transfer.c
@@ -869,7 +869,11 @@ static CURLcode done_sending(struct connectdata *conn,
   return CURLE_OK;
 }
 
-#if defined(WIN32) && defined(SIO_IDEAL_SEND_BACKLOG_QUERY)
+#ifdef WIN32
+#ifndef SIO_IDEAL_SEND_BACKLOG_QUERY
+#define SIO_IDEAL_SEND_BACKLOG_QUERY 0x4004747B
+#endif
+
 static void win_update_buffer_size(curl_socket_t sockfd)
 {
   int result;