[clang] [clang] replaced the usage of `asctime` with `std::put_time` (PR #99075)

[Rainer Orth via cfe-commits]

rorth wrote:

> Aha!
> 
> https://bugs.llvm.org/show_bug.cgi?id=33767

Ah, old sins (from the GCC side no less) keep haunting me.

> We have a mixture of both `std::tm` and `::tm` in here, try switching to using `::tm` and see if that helps.

Unfortunately not: I always get the undefined reference to the `std::tm const *` version, no matter what I tried.

https://github.com/llvm/llvm-project/pull/99075