[llvm] [RemoveDIs] Update ConvertDebugDeclareToDebugValue after #72276 (PR #73508)

[Jeremy Morse via llvm-commits]

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

Oooofff, my bad, good catch. Unfortunately this is a limitation of our testing approach -- there are a number of things around the edges which don't actually appear in a stage2clang build or similar.

(LGTM)

https://github.com/llvm/llvm-project/pull/73508