[PATCH 2/3] wined3d: Clear the BO map_ptr in wined3d_bo_gl_unmap() even if the chunk is still mapped.

[Zebediah Figura]

From: Zebediah Figura

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;
     }