From dbc893f5885cf60f9ebed89c363ff810bde3ebb5 Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Fri, 3 Mar 2023 13:02:11 +0100
Subject: [PATCH] malloc-fail: Fix memory leak in xmlCopyNamespaceList

Found with libFuzzer, see #344.

Reference:https://github.com/GNOME/libxml2/commit/dbc893f5885cf60f9ebed89c363ff810bde3ebb5
Conflict:NA
---
 tree.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tree.c b/tree.c
index 4a80e28..14d5247 100644
--- a/tree.c
+++ b/tree.c
@@ -4046,6 +4046,10 @@ xmlCopyNamespaceList(xmlNsPtr cur) {
 
     while (cur != NULL) {
         q = xmlCopyNamespace(cur);
+        if (q == NULL) {
+            xmlFreeNsList(ret);
+            return(NULL);
+        }
 	if (p == NULL) {
 	    ret = p = q;
 	} else {
-- 
2.27.0