user32: Return WAIT_TIMEOUT in nulldrv_MsgWaitForMultipleObjectsEx.

When there's nothing to wait for. Signed-off-by: Rémi Bernon <rbernon@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

user32: Return WAIT_TIMEOUT in nulldrv_MsgWaitForMultipleObjectsEx.
702b52fe · Rémi Bernon · Alexandre Julliard · 60f6a37f · 702b52fe
Commit 702b52fe authored May 14, 2021 by Rémi Bernon Committed by Alexandre Julliard May 17, 2021
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driver.c dlls/user32/driver.c +1 -0

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--- 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 );
 }