[PATCH v2 0/2] MR1113: include: Add _putenv_s.

[Alex Henrie (＠alexhenrie)]

Needed to compile Tera Term.

--
  v2: include: Add _putenv_s.
      msvcrt: Change return type of _putenv_s to errno_t.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/1113