[Bug libstdc++/84769] variant::get(): unscoped call to get<size_t>

[duarte at scylladb dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84769

--- Comment #6 from Duarte <duarte at scylladb dot com> ---
I think that calls to get<0> should be scoped, for example in visit().