[PATCH 2/4] d3d9: Do not release the wined3d mutex in d3d9_device_upload_sysmem_index_buffer().

[Zebediah Figura]

From: Zebediah Figura

Spotted by Henri Verbeet.

This fixes a regression introduced by 66f37aae7e25740857aeb8ea9c2f0395781389f5.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=53372
---
 dlls/d3d9/device.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/d3d9/device.c b/dlls/d3d9/device.c
index 9f071d7a8d2..894659e9ff9 100644
--- a/dlls/d3d9/device.c
+++ b/dlls/d3d9/device.c
@@ -2993,7 +2993,7 @@ static HRESULT d3d9_device_upload_sysmem_index_buffer(struct d3d9_device *device
     wined3d_box_set(&box, src_offset, 0, buffer_size, 1, 0, 1);
     if (FAILED(hr = wined3d_resource_map(index_buffer, 0, &map_desc, &box, WINED3D_MAP_READ)))
     {
-        wined3d_mutex_unlock();
+        ERR("Failed to map index buffer, hr %#x.\n", hr);
         return hr;
     }
     wined3d_streaming_buffer_upload(device->wined3d_device, &device->index_buffer,