[Issue 18279] rt.util.utf does not properly reserve buffer in toUTF16/toUTF16z

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18279

--- Comment #2 from Steven Schveighoffer <schveiguy at yahoo.com> ---
(In reply to Steven Schveighoffer from comment #1)
> PR: https://github.com/dlang/druntime/pull/2065

Already open PR: https://github.com/dlang/druntime/pull/2053

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