[llvm] [llvm][HashRecognize] Fix compiler warning on Arm 32-bit (PR #161821)

[Piotr Fusik via llvm-commits]

https://github.com/pfusik requested changes to this pull request.

> I thought about using Latch->size() but this skips a call to It.setHeadBit(true); and I'm not sure whether that would make a difference in this context.

Please use `Latch->size()`.

https://github.com/llvm/llvm-project/pull/161821