git: dafdd7863e9e..458532c2dd24 - vendor/llvm-project/release-15.x - vendor branch updated

[Dimitry Andric]

The branch vendor/llvm-project/release-15.x has been updated by dim:

URL: https://cgit.FreeBSD.org/src/log/?id=dafdd7863e9e..458532c2dd24

458532c2dd24 Vendor import of llvm-project branch release/15.x 
llvmorg-15.0.6-0-g088f33605d8a.