[libxml2] Don't reset nsDef when changing node content

[Nick Wellnhofer <nwellnhof src gnome org>]

commit a17a1f564eaac42d6db561c639b5d2461884e829
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Wed May 18 02:17:31 2022 +0200

    Don't reset nsDef when changing node content
    
    nsDef is only used for element nodes.

 tree.c | 3 ---
 1 file changed, 3 deletions(-)
---
diff --git a/tree.c b/tree.c
index 923432f0..e2ab961b 100644
--- a/tree.c
+++ b/tree.c
@@ -5760,7 +5760,6 @@ xmlNodeSetContent(xmlNodePtr cur, const xmlChar *content) {
            } else
                cur->content = NULL;
            cur->properties = NULL;
-           cur->nsDef = NULL;
            break;
         case XML_DOCUMENT_NODE:
         case XML_HTML_DOCUMENT_NODE:
@@ -5835,7 +5834,6 @@ xmlNodeSetContentLen(xmlNodePtr cur, const xmlChar *content, int len) {
            } else
                cur->content = NULL;
            cur->properties = NULL;
-           cur->nsDef = NULL;
            break;
         case XML_DOCUMENT_NODE:
         case XML_DTD_NODE:
@@ -5911,7 +5909,6 @@ xmlNodeAddContentLen(xmlNodePtr cur, const xmlChar *content, int len) {
                            xmlDictOwns(cur->doc->dict, cur->content))) {
                    cur->content = xmlStrncatNew(cur->content, content, len);
                    cur->properties = NULL;
-                   cur->nsDef = NULL;
                } else {
                    cur->content = xmlStrncat(cur->content, content, len);
                 }