message: Fix a typo in set_virtual_device_configuration
diff: @@ -1245,7 +1245,7 @@ class Context(object):
  "Setting memory limit is required for GPU virtual devices")
  else:
  raise ValueError("Virtual devices are not supported for %s" %
  - dev.device_type())
  + dev.device_type)
  if self._virtual_device_map.get(dev) == virtual_devices:
  return
  