Re: [PATCH 05/19] rust: enable `clippy::unnecessary_safety_comment` lint

[Vincenzo Palazzo]

> In Rust 1.67.0, Clippy added the `unnecessary_safety_comment` lint [1],
> which is the "inverse" of `undocumented_unsafe_blocks`: it finds places
> where safe code has a `// SAFETY` comment attached.
>
> The lint currently finds 3 places where we had such mistakes, thus it
> seems already quite useful.
>
> Thus clean those and enable it.
>
> Link: https://rust-lang.github.io/rust-clippy/master/index.html#/unnecessary_safety_comment [1]
> Signed-off-by: Miguel Ojeda <ojeda@xxxxxxxxxx>
> ---

Reviewed-by: Vincenzo Palazzo <vincenzopalazzodev@xxxxxxxxx>