[llvm] [LLVM][ADT] Convert llvm::hash_code to unsigned explicitly in DenseMapInfo (PR #77743)

[Andrei Golubev via llvm-commits]

andrey-golubev wrote:

@dwblaikie do you mind clicking the merge as well? (I don't have the rights at the moment!)

https://github.com/llvm/llvm-project/pull/77743