[Issue 24453] [REG2.108] idup fails for inout(T)[] slices

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=24453

--- Comment #3 from kinke <kinke at gmx.net> ---
Oh wait, `_d_newarrayUPureNothrow` is just allocating, not initializing. No
problem with copy ctors then.

--