[Issue 19213] goto skips declaration of variable in std.algorithm.iteration.joiner

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19213

--- Comment #2 from Jonathan M Davis <issues.dlang at jmdavisProg.com> ---
If you can't easily provide a simplified example, when you have time, you can
use dustmite to try to reduce your code to provide one:
https://github.com/CyberShadow/DustMite/wiki

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