Fix phpGH-12702: libxml2 2.12.0 issue building from src

Fixes phpGH-12702.

Co-authored-by: nono303 <github@nono303.net>

Author: ndossche

NEWS

@@ -5,6 +5,9 @@ PHP                                                                        NEWS
 - Intl:
   . Fixed bug GH-12635 (Test bug69398.phpt fails with ICU 74.1). (nielsdos)
 
+- LibXML:
+  . Fixed bug GH-12702 (libxml2 2.12.0 issue building from src). (nono303)
+
 - PCRE:
   . Fixed bug GH-12628 (The gh11374 test fails on Alpinelinux). (nielsdos)
 

ext/dom/document.c

@@ -23,6 +23,7 @@
 #if defined(HAVE_LIBXML) && defined(HAVE_DOM)
 #include "php_dom.h"
 #include <libxml/SAX.h>
+#include <libxml/xmlsave.h>
 #ifdef LIBXML_SCHEMAS_ENABLED
 #include <libxml/relaxng.h>
 #include <libxml/xmlschemas.h>

ext/libxml/php_libxml.h

@@ -35,6 +35,7 @@ extern zend_module_entry libxml_module_entry;
 
 #include "zend_smart_str.h"
 #include <libxml/tree.h>
+#include <libxml/parser.h>
 
 #define LIBXML_SAVE_NOEMPTYTAG 1<<2