libxslt: use-after-free due to xsltEvalXPathStringNs leaking xpathCtxt->node [384675191] - Project Zero

https://project-zero.issues.chromium.org/issues/384675191

https://twitter.com/home/status/1901910189626016205

https://twitter.com/home/status/1902067068444537040

https://twitter.com/home/status/1902067666552238355