[libc-commits] [libc] [libc][NFC] clean up printf_core and scanf_core (PR #74535)

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michaelrj-google wrote:

I don't know if we have an official ruling in our style guide. My opinion is that `int` is good for situations where I don't really care how wide the integer is (e.g. a loop counter). I use `int32_t` when I actually care about the exact width. I also never use `long` if I don't have to, since it's sometimes the same as `int` and sometimes the same as `long long`.

https://github.com/llvm/llvm-project/pull/74535