Re: [PATCH v3 0/4] MR377: ci: Compile with -Werror.

[Henri Verbeet (＠hverbeet)]

```diff
diff --git a/include/vkd3d_windows.h b/include/vkd3d_windows.h
index 7b0e972d..b35d7d0b 100644
--- a/include/vkd3d_windows.h
+++ b/include/vkd3d_windows.h
@@ -240,6 +240,7 @@ typedef struct SECURITY_ATTRIBUTES SECURITY_ATTRIBUTES;

#elif !defined(__WIDL__)

+# define CONST_VTABLE
 # include <windows.h>

#endif  /* _WIN32 */
```

vkd3d_windows.h is a public header, I don't think we should be adding this here. The issue this addresses mainly affects libvkd3d, right?