[Issue 22491] Building errors on dub build --build=release

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=22491

--- Comment #5 from Alexey <animuspexus at protonmail.com> ---
removed all 'debug' marked code from source - this helped. but I can't
determine, which part exactly fixed the issue. here is diff to my code
https://github.com/AnimusPEXUS/dtk/commit/07a99a5dd1a86db553916ffa00a1447e1ec0c252

now dub build --build=release works ok on both dmd and ldc2

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