[PATCH 0/1] MR6757: include: Annotate PFN_CMSG_ALLOC with __WINE_ALLOC_SIZE.

[Alex Henrie (＠alexhenrie)]

To match [PFN_CRYPT_ALLOC](https://gitlab.winehq.org/alexhenrie/wine/-/blob/3a736901cdd588ba7fbb4318e5f...) and get better warnings when compiling with `-fanalyzer`.