[clang] [clang][PAC] Disallow -pedantic-errors in conjunction with pointer au… (PR #153503)

[Oliver Hunt via cfe-commits]

ojhunt wrote:

force pushed the formatting fix as I forgot to run clang-format before hand, and I figure that no one looked at this in the last 10 seconds :D

https://github.com/llvm/llvm-project/pull/153503