Lagom: Fix printf implementation on win32
It seems that Filip has already done the hard work, and found out the
implementation different between unix* and windows.
Borrowed from:
https://github.com/SerenityOS/serenity/compare/master...filiphsps:serenity:dev-win32#diff-e3209c9a434a102d0d9459e31e33ddb729dff925b95f41b9d1e56c1e7f88c487R466
Co-authored-by: Filiph Sandström <filiph.sandstrom@filfatstudios.com>