[PATCH v2 0/2] MR8702: user32/tests: Add more SendMessageCallbackA/W() tests with NULL callback.

[Zhiyi Zhang (＠zhiyi)]

For React Native.

--
  v2: win32u: Put the message in the queue when callback pointer is NULL and callback data is 1.
      user32/tests: Add more SendMessageCallbackA/W() tests with NULL callback.

https://gitlab.winehq.org/wine/wine/-/merge_requests/8702