FIX: remove stale callback on pickling

tacaswell · tacaswell · commit 54e04d353f82 · 2015-08-09T00:24:36.000-04:00
diff --git a/lib/matplotlib/artist.py b/lib/matplotlib/artist.py
@@ -121,6 +121,7 @@ def __getstate__(self):
         # remove the unpicklable remove method, this will get re-added on load
         # (by the axes) if the artist lives on an axes.
         d['_remove_method'] = None
+        d['stale_callback'] = None
         return d
 
     def remove(self):
