Merge heads.
diff --git a/Modules/_elementtree.c b/Modules/_elementtree.c
index da09aa0..57503d5 100644
--- a/Modules/_elementtree.c
+++ b/Modules/_elementtree.c
@@ -103,7 +103,7 @@
 /* Py_CLEAR for a PyObject* that uses a join flag. Pass the pointer by
  * reference since this function sets it to NULL.
 */
-void _clear_joined_ptr(PyObject **p)
+static void _clear_joined_ptr(PyObject **p)
 {
     if (*p) {
         PyObject *tmp = JOIN_OBJ(*p);