[clang] Silence -Wcast-function-type warnings on idiomatic Windows code (PR #135660)

[via cfe-commits]

llvmbot wrote:

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Failed to cherry-pick: d0e4af8a88dc7a0377677000d0c92104ff215347

https://github.com/llvm/llvm-project/actions/runs/14473318832

Please manually backport the fix and push it to your github fork.  Once this is done, please create a [pull request](https://github.com/llvm/llvm-project/compare)

https://github.com/llvm/llvm-project/pull/135660