[PATCH v2 0/4] MR2267: msvcr80: Fix _(w)dupenv_s behavior with missing environment variable.

[Rémi Bernon]

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  v2: msvcrt: Fix _wdupenv_s behavior with missing env var.
      msvcrt: Fix _dupenv_s behavior with missing env var.
      msvcr80/tests: Test _wdupenv_s outcome with missing env var.
      msvcr80/tests: Test _dupenv_s outcome with missing env var.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/2267