Merge branch 'PHP-8.0' into PHP-8.1

Author: Girgias

NEWS

@@ -6,10 +6,6 @@ PHP                                                                        NEWS
   . Fixed bug GH-9323 (Crash in ZEND_RETURN/GC/zend_call_function)
     (Tim Starling)
 
-- DOM:
-  . Fixed bug  #79451 (Using DOMDocument->replaceChild on doctype causes
-     double free) (NathanFreeman)
-
 - Streams:
   . Fixed bug GH-9316 ($http_response_header is wrong for long status line).
     (cmb, timwolla)

ext/dom/node.c

@@ -20,7 +20,6 @@
 #endif
 
 #include "php.h"
-
 #if defined(HAVE_LIBXML) && defined(HAVE_DOM)
 #include "php_dom.h"
 
@@ -1004,7 +1003,6 @@ PHP_METHOD(DOMNode, replaceChild)
 	xmlNodePtr newchild, oldchild, nodep;
 	dom_object *intern, *newchildobj, *oldchildobj;
 	int stricterror;
-	bool replacedoctype = false;
 
 	int ret;