Giovanni Mascellani : mfplat: Do not mark a DXGI buffer as locked if surface mapping fails.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: df660e80f07fd129a9fbbd3c01c153c6a2ebb558
URL:    https://gitlab.winehq.org/wine/wine/-/commit/df660e80f07fd129a9fbbd3c01c153c...

Author: Giovanni Mascellani 
Date:   Mon Apr 17 15:24:08 2023 +0200

mfplat: Do not mark a DXGI buffer as locked if surface mapping fails.

Analogous to 44c9ea50432771258e9eed012967a16c6f132fe9.

---

dlls/mfplat/buffer.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dlls/mfplat/buffer.c b/dlls/mfplat/buffer.c
index df85af37126..1c38e03c3e1 100644
--- a/dlls/mfplat/buffer.c
+++ b/dlls/mfplat/buffer.c
@@ -1039,11 +1039,12 @@ static HRESULT dxgi_surface_buffer_lock(struct buffer *buffer, MF2DBuffer_LockFl

if (buffer->_2d.linear_buffer)
         hr = MF_E_UNEXPECTED;
-    else if (!buffer->_2d.locks++)
+    else if (!buffer->_2d.locks)
         hr = dxgi_surface_buffer_map(buffer);

if (SUCCEEDED(hr))
     {
+        buffer->_2d.locks++;
         *scanline0 = buffer->dxgi_surface.map_desc.pData;
         *pitch = buffer->dxgi_surface.map_desc.RowPitch;
         if (buffer_start)