Work around remaining AGG bug. See r19337.
Work around remaining AGG bug. See r19337.

tommy-u/chaco,ContinuumIO/chaco,tommy-u/chaco,ContinuumIO/chaco,burnpanck/chaco,tommy-u/chaco,burnpanck/chaco,burnpanck/chaco,ContinuumIO/chaco,ContinuumIO/chaco