[PATCH] Fix typo in std::stack (PR libstdc++/81599)

[Ville Voutilainen]

On 31 July 2017 at 16:25, Marek Polacek <polacek@redhat.com> wrote:
> The documentation of std::stack says that the underlying container must support
> pop_front, but that is wrong, it meant to say pop_back, so this patch fixes
> that.

Indeed, the documentation has a copy-pasto originating from bits/stl_queue.h.

> Ok for trunk?


I can't approve the patch, but I suggest committing it as obvious.