[PATCH 07/11] mfplat: Do not mark a DXGI buffer as locked if surface mapping fails.

[Giovanni Mascellani]

From: Giovanni Mascellani

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)