Rename two instances of MAP_NONRESERVE

[strega-nil]

To the correct MAP_NORESERVE. Every other instance is known as MAP_NORESERVE, so this is just a basic typo.

I really doubt this will break anybody's but my own code.

[breaking-change]

[rust-highfive]

Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @nikomatsakis (or someone else) soon.

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[strega-nil]

Actually, now that I look, there is no one actually using this, except for some documentation and some libraries that will be updated (and me). So... technically [BREAKING], but not really.

[alexcrichton]

@bors: r+

Thanks! We actually have a breaking changes policy for how to denote a breaking change or not (I went ahead and edited this description and title).

[bors]

@bors r=alexcrichton cbd37d8

[oli-obk]

this closes #23408

[GuillaumeGomez]

I close mine too (#23413).

[strega-nil]

@alexcrichton Thanks :)