[Bug libstdc++/114645] std::chrono::current_zone ignores $TZ on Linux

[hristo at venev dot name via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114645

--- Comment #11 from Hristo Venev <hristo at venev dot name> ---
I never said that reading $TZ is easy, just that not doing it is (in my
opinion) wrong.