[clang] [MS] Follow up fix to pass aligned args to variadic x86_32 functions (PR #65692)

[Aaron Ballman via cfe-commits]

https://github.com/AaronBallman approved this pull request.

Approving, but do wait a bit before landing in case a codegen code owner has comments.

https://github.com/llvm/llvm-project/pull/65692