Re: [PATCH v2 0/28] MR2595: include: Add windows.ui.composition.idl file.

[Biswapriyo Nath (＠Biswa96)]

The generated header file shows the following compiler warning in clang mingw-w64 toolchain.

```
F:/msys64/clang64/include/windows.ui.composition.h:4919:30: error: ISO C++ forbids forward references to 'enum' types
                        enum DirectXAlphaMode *value) = 0;
                             ^
F:/msys64/clang64/include/windows.ui.composition.h:4922:30: error: ISO C++ forbids forward references to 'enum' types
                        enum DirectXPixelFormat *value) = 0;
                             ^
```

Is that related to this IDL file in some way?