[compiler-rt] [sanitizer] Fix prctl interceptor causing PAC authentication failure (PR #153081)

[Fei Peng via llvm-commits]

airpfei wrote:

Hi @pcc, I reformatted the code as suggested. Could you please approve the workflows `Build and Test Linux` and `Build and Test Windows`?

https://github.com/llvm/llvm-project/pull/153081