From 19031bfdb767e4bdab784504bba68bc1e2fc0ae6 Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Mon, 10 Jun 2024 18:50:28 +0200
Subject: [PATCH] io: Fix resetting xmlParserInputBufferCreateFilename hook

We don't want to invoke the default function.
---
 xmlIO.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/xmlIO.c b/xmlIO.c
index d4275cbf..640d909c 100644
--- a/xmlIO.c
+++ b/xmlIO.c
@@ -2211,13 +2211,17 @@ xmlOutputBufferCreateIO(xmlOutputWriteCallback   iowrite,
  * Returns the old value of the registration function
  */
 xmlParserInputBufferCreateFilenameFunc
-xmlParserInputBufferCreateFilenameDefault(xmlParserInputBufferCreateFilenameFunc func)
+xmlParserInputBufferCreateFilenameDefault(
+        xmlParserInputBufferCreateFilenameFunc func)
 {
-    xmlParserInputBufferCreateFilenameFunc old = xmlParserInputBufferCreateFilenameValue;
-    if (old == NULL) {
-		old = __xmlParserInputBufferCreateFilename;
-	}
+    xmlParserInputBufferCreateFilenameFunc old;
 
+    old = xmlParserInputBufferCreateFilenameValue;
+    if (old == NULL)
+        old = __xmlParserInputBufferCreateFilename;
+
+    if (func == __xmlParserInputBufferCreateFilename)
+        func = NULL;
     xmlParserInputBufferCreateFilenameValue = func;
     return(old);
 }