[Bug libstdc++/112942] swap(variant&, variant&) is incorrectly marked as deleted

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112942

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
https://gcc.gnu.org/pipermail/libstdc++/2016-November/045176.html