From 10c202f9dc41370b0918f57bbc185d95e73fc643 Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Mon, 4 Mar 2024 01:31:12 +0100
Subject: [PATCH] malloc-fail: Check for NULL pointer in xmlSaveNotation*

---
 xmlsave.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/xmlsave.c b/xmlsave.c
index 70b586d7..7f15b016 100644
--- a/xmlsave.c
+++ b/xmlsave.c
@@ -2171,12 +2171,16 @@ xmlSaveTree(xmlSaveCtxtPtr ctxt, xmlNodePtr cur)
 
 int
 xmlSaveNotationDecl(xmlSaveCtxtPtr ctxt, xmlNotationPtr cur) {
+    if (ctxt == NULL)
+        return(-1);
     xmlBufDumpNotationDecl(ctxt->buf, cur);
     return(0);
 }
 
 int
 xmlSaveNotationTable(xmlSaveCtxtPtr ctxt, xmlNotationTablePtr cur) {
+    if (ctxt == NULL)
+        return(-1);
     xmlBufDumpNotationTable(ctxt->buf, cur);
     return(0);
 }