https://gitlab.gnome.org/World/AbiWord/-/commit/2a06be6a10a0718f8a3d8e00c317f5042c99a467
https://bugs.gentoo.org/923394

From 2a06be6a10a0718f8a3d8e00c317f5042c99a467 Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Mon, 11 Dec 2023 01:55:53 +0100
Subject: [PATCH] Fix build with libxml2 2.12
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libxml 2.12.0 restructured headers so that xmlFree is no longer in the scope.
Let’s add the correct include.
--- a/src/af/util/xp/ut_stringbuf.cpp
+++ b/src/af/util/xp/ut_stringbuf.cpp
@@ -26,6 +26,7 @@
 #include <algorithm>
 
 #include <libxml/uri.h>
+#include <libxml/xmlmemory.h>
 
 #include <glib.h>
 
-- 
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