:mod:`xml.etree.ElementTree`: Fix a use-after-free in :meth:`Element.findtext <xml.etree.ElementTree.Element.findtext>` when the element tree is mutated concurrently during the search.
:mod:`xml.etree.ElementTree`: Fix a use-after-free in :meth:`Element.findtext <xml.etree.ElementTree.Element.findtext>` when the element tree is mutated concurrently during the search.