Fix CVE-2023-45322: libxml2 through 2.11.5 has a use-after-free that can
only occur after a certain memory allocation fails. This occurs in
xmlUnlinkNode in tree.c. NOTE: the vendor's position is "I don't think
these issues are critical enough to warrant a CVE ID ... because an
attacker typically can't control when memory allocations fail."
https://gitlab.gnome.org/GNOME/libxml2/-/blob/v2.11.6/NEWS
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
e5af07dce9