[llvm-branch-commits] [libclang] Replace createRef with createDup (PR #126683)

[Eli Friedman via llvm-branch-commits]

https://github.com/efriedma-quic approved this pull request.

LGTM.  Looking at the code, none of these codepaths should be hot, so I don't expect any significant performance difference.

https://github.com/llvm/llvm-project/pull/126683