From 0149e3a0903be8d47d1d6da0fd9ff3767c517085 Mon Sep 17 00:00:00 2001
From: Fredrik Lundh <fredrik@pythonware.com>
Date: Sun, 18 Dec 2005 13:58:25 +0000
Subject: [PATCH] Fixed None reference leaks in TreeBuilder class (reported by
 Neal Norwitz)

---
 Modules/_elementtree.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Modules/_elementtree.c b/Modules/_elementtree.c
index af813bd54bd..6348f521f88 100644
--- a/Modules/_elementtree.c
+++ b/Modules/_elementtree.c
@@ -1501,10 +1501,12 @@ treebuilder_handle_start(TreeBuilderObject* self, PyObject* tag,
 
     if (self->data) {
         if (self->this == self->last) {
+            Py_DECREF(self->last->text);
             self->last->text = JOIN_SET(
                 self->data, PyList_CheckExact(self->data)
                 );
         } else {
+            Py_DECREF(self->last->tail);
             self->last->tail = JOIN_SET(
                 self->data, PyList_CheckExact(self->data)
                 );
@@ -1606,10 +1608,12 @@ treebuilder_handle_end(TreeBuilderObject* self, PyObject* tag)
 
     if (self->data) {
         if (self->this == self->last) {
+            Py_DECREF(self->last->text);
             self->last->text = JOIN_SET(
                 self->data, PyList_CheckExact(self->data)
                 );
         } else {
+            Py_DECREF(self->last->tail);
             self->last->tail = JOIN_SET(
                 self->data, PyList_CheckExact(self->data)
                 );