message: Fix config with ease
diff: @@ -249,7 +249,7 @@ class ConfigWithEase(ScenarioGeneration):
  scenario = Scenario(map_file_name=self._map_file_name,
  json_params=self._params.ConvertToDict())
  # as we always use the same world, we can create the MapIntf. once
  - if self._map_interface is not None:
  + if self._map_interface is None:
  self._map_interface = scenario.CreateMapInterface(self._map_file_name)
  scenario.map_interface = self._map_interface
  world = scenario.GetWorldState()
  