bors 256721ee51 Auto merge of #92553 - m-ou-se:thread-join-simplify, r=Mark-Simulacrum
Simpilfy thread::JoinInner.

`JoinInner`'s `native` field was an `Option`, but that's unnecessary.

Also, thanks to `Arc::get_mut`, there's no unsafety needed in `JoinInner::join()`.
2022-01-13 03:46:19 +00:00
..
2021-12-18 00:21:53 +11:00