[Bug libffi/67801] error in libffi documentation

[tromey at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67801

--- Comment #4 from Tom Tromey <tromey at gcc dot gnu.org> ---
This was fixed by

commit 92456a4e5658e138e2cea79e390e3306b07685b0
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Tue Aug 31 07:14:47 2021 -0700

    libffi: Sync with libffi 3.4.2

    Merged commit: f9ea41683444ebe11cfa45b05223899764df28fb

I'm not sure when it's ok to close a GCC bug, so I'm leaving this open.