[lld] [lld-macho] Fix category merging sed issue - Try nr.2 (PR #112981)

[Arthur Eubanks via llvm-commits]

aeubanks wrote:

https://ci.chromium.org/ui/p/chromium/builders/try/win_upload_clang/5846/overview is the failing bot

#113209 to disable the test on Windows. The problem is that LLVM sorta supports building with gnuwin32 tools, although people have moved in the direction of git for windows tools over time. gnuwin32 is very old, but we have sent out patches before to disable tests on Windows due to lack of gnuwin32 support. I will try to upgrade our bots not use gnuwin32, but I'd like to keep things green for now if that's ok

https://github.com/llvm/llvm-project/pull/112981