[flang] [clang] [clang-tools-extra] [llvm] [flang ]GETLOG runtime and extension implementation: get login username (PR #70917)

[Yi Wu via cfe-commits]

yi-wu-arm wrote:

> > Hello @klausler, could you please share your thoughts or comments on this patch, particularly with regard to the Windows side? Thanks in advance.
> 
> You should use modern C++ braced initialization in flang/runtime.

Hi @klausler. Thanks for the comment! I have updated the runtime file with variables being braced initialized. Any other things that I should be aware of? Thanks in advance.

https://github.com/llvm/llvm-project/pull/70917