Tweaked.

Phil Elson · Phil Elson · commit ab0615cba29f · 2012-01-31T16:57:50.000Z
diff --git a/lib/matplotlib/figure.py b/lib/matplotlib/figure.py
@@ -762,7 +762,6 @@ def add_subplot(self, *args, **kwargs):
                 projection_class = get_projection_class(projection)
             else:
                 projection_class, extra_kwargs = projection._as_mpl_axes()
-                # XXX Do the extra arguments need to be hashable???
                 kwargs.update(**extra_kwargs)
 
             # Remake the key without projection kwargs:
