[lld] [lld][macho] Support 1-byte branch relocs for x86_64 (PR #164439)

[Jez Ng via llvm-commits]

int3 wrote:

Thanks for the review! As I've not contributed to LLVM in a while, my commit access has expired. Could you commit it for me please?

https://github.com/llvm/llvm-project/pull/164439