[llvm-branch-commits] [llvm] [NFC] Use unique_ptr in SparseSet (PR #116617)

[Akshat Oke via llvm-branch-commits]

optimisan wrote:

### Merge activity

* **Nov 22, 6:17 AM EST**: A user started a stack merge that includes this pull request via [Graphite](https://app.graphite.dev/github/pr/llvm/llvm-project/116617).


https://github.com/llvm/llvm-project/pull/116617