This add a static inline version of `g_memdup2` if the version of glib we're
compiling against doesn't have the function.
GHSL-2021-045 was originally reported to glib at
https://gitlab.gnome.org/GNOME/glib/-/issues/2319.
More information about the entire situation can be found on the gnome
desktop-devel-list at
https://mail.gnome.org/archives/desktop-devel-list/2021-February/msg00000.html
Testing Done:
Compiled and ran tests locally.
Reviewed at https://reviews.imfreedom.org/r/483/
/**
* Send commands to Purple via ~/.purple/control
*
* Originally by Eric Warmenhoven <eric@warmenhoven.org>
* Compile fixes/mini hacks Alex Bennee <alex@bennee.com>
* and Brian Tarricone <bjt23@users.sourceforge.net>