[GIT-PULLS] [php-src] PR #23379: ext/dom: DOMNode::insertBefore() dropping the node used as its own re…

[email protected] (devnexen)
Newsgroups php.git-pulls
Message-ID <[email protected]> 
Pull Request: https://github.com/php/php-src/pull/23379
Author: devnexen

…ference.

Fix #23365

insertBefore($n, $n) unlinked the node, then rebuilt its position from the pointers the unlink had just cleared, leaving it out of the document with a self-referencing sibling list, freed twice at teardown. Retarget the reference to the node's next sibling, as the modern DOM already does.
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