axes_grid demo broken #1572

Traceback (most recent call last):
  File "demo_axes_grid2.py", line 112, in <module>
    plt.draw()
  File "/home/rmay/.local/lib/python2.7/site-packages/matplotlib/pyplot.py", line 467, in draw
    get_current_fig_manager().canvas.draw()
  File "/home/rmay/.local/lib/python2.7/site-packages/matplotlib/backends/backend_qt4agg.py", line 148, in draw
    FigureCanvasAgg.draw(self)
  File "/home/rmay/.local/lib/python2.7/site-packages/matplotlib/backends/backend_agg.py", line 439, in draw
    self.figure.draw(self.renderer)
  File "/home/rmay/.local/lib/python2.7/site-packages/matplotlib/artist.py", line 54, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "/home/rmay/.local/lib/python2.7/site-packages/matplotlib/figure.py", line 999, in draw
    func(*args)
  File "/home/rmay/.local/lib/python2.7/site-packages/mpl_toolkits/axes_grid1/axes_divider.py", line 892, in draw
    self._axes_class.draw(self, renderer, inframe)
  File "/home/rmay/.local/lib/python2.7/site-packages/matplotlib/artist.py", line 54, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "/home/rmay/.local/lib/python2.7/site-packages/matplotlib/axes.py", line 2093, in draw
    a.draw(renderer)
  File "/home/rmay/.local/lib/python2.7/site-packages/matplotlib/offsetbox.py", line 1055, in draw
    self.get_child().draw(renderer)
  File "/home/rmay/.local/lib/python2.7/site-packages/matplotlib/offsetbox.py", line 753, in draw
    self._text.draw(renderer)
  File "/home/rmay/.local/lib/python2.7/site-packages/matplotlib/artist.py", line 54, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "/home/rmay/.local/lib/python2.7/site-packages/matplotlib/text.py", line 608, in draw
    ismath=ismath, mtext=self)
TypeError: draw_text() got an unexpected keyword argument 'mtext'