ext/xsl: discard partially-constructed xmlNs on xmlStrdup failure#21888

iliaal wants to merge 1 commit intophp:PHP-8.4php/php-src:PHP-8.4from

iliaal:fix/xsl-add-ns-def-strdup-null-8.4iliaal/php-src:fix/xsl-add-ns-def-strdup-null-8.4Copy head branch name to clipboard