https://github.com/rpm-software-management/createrepo_c/pull/328

From cddd4c161523cf4340aa59f832d130e7c34ffd14 Mon Sep 17 00:00:00 2001
From: Sam James <sam@gentoo.org>
Date: Wed, 19 Oct 2022 03:10:06 +0100
Subject: [PATCH] Include <rpm/rpmstring.h> for rasprintf

Fixes build with Clang 16.

Bug: https://bugs.gentoo.org/875698
--- a/src/xml_file.c
+++ b/src/xml_file.c
@@ -20,6 +20,7 @@
 #include <glib.h>
 #include <glib/gstdio.h>
 #include <assert.h>
+#include <rpm/rpmstring.h>
 #include "xml_file.h"
 #include <errno.h>
 #include "error.h"