[Mlir-commits] [mlir] [MLIR][EmitC][NFC] Use `llvm::function_ref<>` instead of `std::optional<llvm::function_ref<>>` (PR #146478)

[Benjamin Maxwell]

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

LGTM, `function_ref` is nullable.  

https://github.com/llvm/llvm-project/pull/146478