[Bug c++/59713] unordered_map constructor / destructor / move

[victor.robertson.iv at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59713

--- Comment #5 from Victor Robertson <victor.robertson.iv at gmail dot com> ---
My apologies!

I'm not sure why I first thought it was with libstdc++, but after realizing
that just adding that explicitly defined default destructor fixed it, I
couldn't imagine it being the library.