[php-src] PR #25320: Fix GH-25305: NULL dereference in lxb_dom_document_destroy on lexbor …

Pull Request: https://github.com/php/php-src/pull/25320 Author: devnexen …document init failure lxb_dom_document_init() set owner_document only after all of the document's memory pools were created. When one of these allocations failed, which the fallible lexbor allocators make possible once memory_limit is reached, the error path of lxb_html_document_interface_create() called lxb_dom_document_destroy() with a NULL owner_document and dereferenced it. The failure path also left dangling pointers to the destroyed pools. Set owner_document before allocating and reset the pool pointers on failure, carried as a lexbor patch until lexbor/lexbor#449 is merged. Only the source/lexbor part of the upstream change is carried.