[Issue 21004] dmd segmentation fault with 'void' struct member array initializer

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21004

--- Comment #2 from Basile-z <b2.temp at gmx.com> ---
one thing is that void init of members is not a thing, I've been told recently
(*).

DMD should process the initializer as a default one instead of processing all
the elements.

(*): https://github.com/ldc-developers/ldc/issues/4285#issuecomment-1337471489

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