nicole mazzuca d067062a42 [libc++] fix array<T, 0> under USE_WRAP_ITER (#101156) ...

`array<T, 0>::iterator` was always a pointer even when
`_LIBCXX_ABI_USE_WRAP_ITER_IN_STD_ARRAY` was defined. This patch fixes
that minor bug.

Discovered as part of [#100603][].

Drive-by: switch from `typedef` to `using` in `<array>`

[#100603]: https://github.com/llvm/llvm-project/pull/100603

2024-07-30 11:24:11 -07:00

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