From 702b52fe13fa08040bdd94400b3f4e5eec049d0a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=A9mi=20Bernon?= <rbernon@codeweavers.com>
Date: Fri, 14 May 2021 13:40:06 +0200
Subject: [PATCH] user32: Return WAIT_TIMEOUT in
 nulldrv_MsgWaitForMultipleObjectsEx.
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

When there's nothing to wait for.

Signed-off-by: Rémi Bernon <rbernon@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
---
 dlls/user32/driver.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/dlls/user32/driver.c b/dlls/user32/driver.c
index f769677d30d..54a888b16d9 100644
--- a/dlls/user32/driver.c
+++ b/dlls/user32/driver.c
@@ -305,6 +305,7 @@ static void CDECL nulldrv_GetDC( HDC hdc, HWND hwnd, HWND top_win, const RECT *w
 static DWORD CDECL nulldrv_MsgWaitForMultipleObjectsEx( DWORD count, const HANDLE *handles, DWORD timeout,
                                                         DWORD mask, DWORD flags )
 {
+    if (!count && !timeout) return WAIT_TIMEOUT;
     return WaitForMultipleObjectsEx( count, handles, flags & MWMO_WAITALL,
                                      timeout, flags & MWMO_ALERTABLE );
 }