[Issue 18143] in/out contracts should be implicitly 'this' const

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18143

--- Comment #3 from Dlang Bot <dlang-bot at dlang.rocks> ---
dlang/dmd pull request #12153 "[dmd-cxx] Backport fixes for issue 18143 and
18719." was merged into dmd-cxx:

- b6e4baefe04777e905a61c7d1291a9ed691a8698 by Iain Buclaw:
  fix Issue 18143 - in/out contracts should be implicitly 'this' const

https://github.com/dlang/dmd/pull/12153

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