g_clear_pointer() is not available in glib-2.28 which is minimal required version for gtk+-2.24. https://bugzilla.gnome.org/show_bug.cgi?id=708783
g_clear_pointer() is not available in glib-2.28 which is minimal required version for gtk+-2.24. https://bugzilla.gnome.org/show_bug.cgi?id=708783