message: be sure we use the same fee_algorithm accross the test
diff: @@ -413,8 +413,6 @@ mod test {
  {
  let change_address = mk_random_daedalus_style_address();
  - let fee_alg = LinearFee::default();
  -
  let error = input_selection_scheme.compute(
  &LinearFee::default(),
  outputs.clone(),
  @@ -434,7 +432,7 @@ mod test {
  let fee_alg = LinearFee::default();
  let input_selection_result = input_selection_scheme.compute(
  - &LinearFee::default(),
  + &fee_alg,
  outputs.clone(),
  &OutputPolicy::One(change_address.clone())
  ).unwrap();
  