[glib] glib.py: Fix Python 3 TypeError in gdb pretty-printers

[Olivier Crête <tester src gnome org>]

commit c935237e75c4ed770d9efc9e8bd3be109889d994
Author: Marius Gedminas <marius gedmin as>
Date:   Fri May 8 02:54:00 2015 -0400

    glib.py: Fix Python 3 TypeError in gdb pretty-printers
    
    https://bugzilla.gnome.org/show_bug.cgi?id=749092

 glib/glib.py |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/glib/glib.py b/glib/glib.py
index f7fe22b..38f101a 100644
--- a/glib/glib.py
+++ b/glib/glib.py
@@ -67,6 +67,8 @@ class GListPrinter:
             self.count = self.count + 1
             return ('[%d]' % count, data)
 
+        __next__ = next
+
     def __init__ (self, val, listtype):
         self.val = val
         self.listtype = listtype
@@ -121,6 +123,8 @@ class GHashPrinter:
                     return ('[%dk]'% (self.pos), key)
             raise StopIteration
 
+        __next__ = next
+
     def __init__ (self, val):
         self.val = val
         self.keys_are_strings = False