[clang] [C] Add (new) -Wimplicit-void-ptr-cast to -Wc++-compat (PR #136855)

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earnol wrote:

Could you please take a look into the issue https://github.com/llvm/llvm-project/issues/138145 i created and provide an input from your side if possible.

https://github.com/llvm/llvm-project/pull/136855