[Issue 22025] Exception within a delegate can't be thrown.

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=22025

--- Comment #4 from Iain Buclaw <ibuclaw at gdcproject.org> ---
PR submitted, please check this again.

https://github.com/dlang/druntime/pull/3612

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