message: Fixing pylint failures
diff: @@ -3742,7 +3742,8 @@ def rnn(step_function,
  for state, new_state in zip(states, new_states):
  # (see earlier comment for tile explanation)
  tiled_mask_t = _expand_mask(mask_t, new_state)
  - return_states.append(array_ops.where_v2(tiled_mask_t, new_state, state))
  + return_states.append(array_ops.where_v2(tiled_mask_t,
  + new_state, state))
  states = return_states
  successive_outputs.append(output)
  successive_states.append(states)
  