Bug#932950: libglibmm-2.4-1v5: double free when multiple Gio::ThemedIcons::get_names() call

[Wang Gary]

Package: libglibmm-2.4-1v5
Version: libglibmm-2.4-1v5:2.58.0-2
Severity: normal

This bug affact current debian buster (libglibmm-2.4-1v5:2.58.0-2) and
debian stretch (libglibmm-2.4-1v5:2.50.0-1). If program using glibmm
call Gio::ThemedIcons::get_names() function twice, it will lead the
program
crashed.

This issue is reported to upstream and it's fixed by upstream (
https://gitlab.gnome.org/GNOME/glibmm/issues/50 ) , still willing to
use
package directly from Debian repository, is that possible to backport the
patch to buster and stretch repository?