[libxml2] Fix tree iterators broken by 2to3 script

[Daniel Veillard <veillard src gnome org>]

commit 87f3287d9b00bdc39be032a8a3f2d46860eaf787
Author: Daniel Veillard <veillard redhat com>
Date:   Mon Apr 1 13:33:42 2013 +0800

    Fix tree iterators broken by 2to3 script

 python/libxml.py |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/python/libxml.py b/python/libxml.py
index b634982..117de82 100644
--- a/python/libxml.py
+++ b/python/libxml.py
@@ -528,7 +528,7 @@ class xmlCoreDepthFirstItertor:
         self.parents = []
     def __iter__(self):
         return self
-    def __next__(self):
+    def next(self):
         while 1:
             if self.node:
                 ret = self.node
@@ -539,7 +539,7 @@ class xmlCoreDepthFirstItertor:
                 parent = self.parents.pop()
             except IndexError:
                 raise StopIteration
-            self.node = parent.__next__
+            self.node = parent.next
 
 #
 # implements the breadth-first iterator for libxml2 DOM tree
@@ -550,12 +550,12 @@ class xmlCoreBreadthFirstItertor:
         self.parents = []
     def __iter__(self):
         return self
-    def __next__(self):
+    def next(self):
         while 1:
             if self.node:
                 ret = self.node
                 self.parents.append(self.node)
-                self.node = self.node.__next__
+                self.node = self.node.next
                 return ret
             try:
                 parent = self.parents.pop()