[Issue 21618] rdmd does not accept `-boundscheck=off` argument

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21618

skocznymr at gmail.com changed:

           What    |Removed                     |Added
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                 CC|                            |skocznymr at gmail.com

--- Comment #1 from skocznymr at gmail.com ---
Works for me on DMD v2.096.1 on Windows.

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