[lld] [llvm] [lld][MachO] Follow-up to use madvise() for threaded file page-in. (PR #157917)

[John Holdsworth via llvm-commits]

johnno1962 wrote:

I've added changes to two additional files to counter the performance regression from https://github.com/llvm/llvm-project/commit/85cd3d98686c47d015dbcc17f1f7d0714b00e172 for the linker due to not mmap()ing 10% of input files. Binary object and archive files don't need to be null terminated. This seemed the least intrusive change.

https://github.com/llvm/llvm-project/pull/157917