[clang] [llvm] Release fix (PR #200734)

[Hans Wennborg via cfe-commits]

https://github.com/zmodem approved this pull request.

I don't have any experience with Wix, but this looks reasonable to me.

(The PR title is just "Release fix", maybe make that more specific :-)

https://github.com/llvm/llvm-project/pull/200734