[libcxx-commits] [libcxx] [libc++][iterator] Applied `[[nodiscard]]` (PR #172200)

[A. Jiang via libcxx-commits]

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frederick-vs-ja wrote:

Let's remove these as `pointer_traits<__wrap_iter>` is now removed.
```suggestion
```

https://github.com/llvm/llvm-project/pull/172200