Zebediah Figura : wined3d: Clear the BO map_ptr in wined3d_bo_gl_unmap() even if the chunk is still mapped.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 24ff5c2f5e800d805fabdc5bca6db546b5c8763e
URL:    https://gitlab.winehq.org/wine/wine/-/commit/24ff5c2f5e800d805fabdc5bca6db54...

Author: Zebediah Figura 
Date:   Sun Jul 10 15:29:39 2022 -0500

wined3d: Clear the BO map_ptr in wined3d_bo_gl_unmap() even if the chunk is still mapped.

If we subsequently try to destroy it we will decrease the chunk map_count again, which is a reference counting error.

---

dlls/wined3d/context_gl.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/dlls/wined3d/context_gl.c b/dlls/wined3d/context_gl.c
index 5292297bb85..52a75c3d5ea 100644
--- a/dlls/wined3d/context_gl.c
+++ b/dlls/wined3d/context_gl.c
@@ -2949,8 +2949,7 @@ static void wined3d_bo_gl_unmap(struct wined3d_bo_gl *bo, struct wined3d_context
         struct wined3d_allocator_chunk_gl *chunk_gl = wined3d_allocator_chunk_gl(bo->memory->chunk);

wined3d_allocator_chunk_gl_unmap(chunk_gl, context_gl);
-        if (!chunk_gl->c.map_ptr)
-            bo->b.map_ptr = NULL;
+        bo->b.map_ptr = NULL;
         return;
     }