Nikolay Sivov : mfplat: Always initialize output arguments in GetScanline0AndPitch() for d3d9 buffers.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: ca52f07565b52718f87881849bff136cf053c07c
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=ca52f07565b52718f87881849...

Author: Nikolay Sivov <nsivov(a)codeweavers.com>
Date:   Thu Mar 25 12:40:33 2021 +0300

mfplat: Always initialize output arguments in GetScanline0AndPitch() for d3d9 buffers.

Signed-off-by: Nikolay Sivov <nsivov(a)codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/mfplat/buffer.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dlls/mfplat/buffer.c b/dlls/mfplat/buffer.c
index e6bf52662e8..d4efafdea45 100644
--- a/dlls/mfplat/buffer.c
+++ b/dlls/mfplat/buffer.c
@@ -689,7 +689,11 @@ static HRESULT WINAPI d3d9_surface_buffer_GetScanline0AndPitch(IMF2DBuffer2 *ifa
     EnterCriticalSection(&buffer->cs);
 
     if (!buffer->_2d.locks)
+    {
+        *scanline0 = NULL;
+        *pitch = 0;
         hr = HRESULT_FROM_WIN32(ERROR_WAS_UNLOCKED);
+    }
     else
     {
         *scanline0 = buffer->d3d9_surface.rect.pBits;