Rollup of 5 pull requests
Successful merges:
- #69937 (ASCII methods on OsStr)
- #70235 (Validate git setup before accessing functionality)
- #70503 (rename Scalar::{ptr_null -> null_ptr} and add "machine_" prefix like elsewhere)
- #70508 (Miri: use more specialized Scalar::from_ constructors where appropriate)
- #70510 (fix TryEnterCriticalSection return type)
Failed merges:
r? @ghost