[clang] [LifetimeSafety] Add multi-block support to buildOriginFlowChain (PR #204592)

[via cfe-commits]

NeKon69 wrote:

> So, I remove the `StartPoint` parameter to find the `OriginID` correctly.

Is this still true? Maybe I am looking somewhere wrong but I think you do use that parameter.

https://github.com/llvm/llvm-project/pull/204592