MFH: fix possible crash

diff --git a/ext/simplexml/simplexml.c b/ext/simplexml/simplexml.c
index d480497738d03773f4773171fbccc1f560e75b4b..47260f965f6517ab083914a71898a397047a837b 100644 (file)
--- a/ext/simplexml/simplexml.c
+++ b/ext/simplexml/simplexml.c
@@ -1575,7 +1575,9 @@ SXE_METHOD(addChild)
                        newnode->ns = NULL;
                        nsptr = xmlNewNs(newnode, (xmlChar *)nsuri, prefix);
                } else {
-                       nsptr = xmlSearchNsByHref(node->doc, node, (xmlChar *)nsuri);
+                       if (node) {
+                               nsptr = xmlSearchNsByHref(node->doc, node, (xmlChar *)nsuri);
+                       }
                        if (nsptr == NULL) {
                                nsptr = xmlNewNs(newnode, (xmlChar *)nsuri, prefix);
                        }