Rollup merge of #105298 - krasimirgg:llvm-16-dec-1, r=cuviper

llvm-wrapper: adapt for an LLVM API change

Adapts llvm-wrapper for https://github.com/llvm/llvm-project/commit/8c7c20f033c7036a8bf231ca6f9e02172cb581f0.
No functional changes intended.

Found via our experimental rust + llvm @ HEAD bot: https://buildkite.com/llvm-project/rust-llvm-integrate-prototype/builds/15404#0184d95d-5a68-4db6-ad32-51ddbc3ab543/202-571

diff --cc compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
Simple merge