message: Fix std tests
diff: @@ -130,11 +130,10 @@ impl Querier for MockQuerier {
  match request {
  QueryRequest::Balance { address, denom } => {
  // proper error on not found, serialize result on found
  - let all = self.balances.get(address);
  - let amount = match all {
  - Some(v) => v.iter().find(|c| &c.denom == denom).map(|c| c.amount),
  - None => None,
  - }
  + let amount = self
  + .balances
  + .get(address)
  + .and_then(|v| v.iter().find(|c| &c.denom == denom).map(|c| c.amount))
  .unwrap_or_default();
  let bank_res = BalanceResponse {
  amount: Coin {
  @@ -172,9 +171,9 @@ mod test {
  let api = MockApi::new(20);
  // make sure we can generate with &str, &HumanAddr, and HumanAddr
  - let a = mock_env(&api, "my name", &[], &coins(100, "atom"));
  - let b = mock_env(&api, &name, &[], &coins(100, "atom"));
  - let c = mock_env(&api, name, &[], &coins(100, "atom"));
  + let a = mock_env(&api, "my name", &coins(100, "atom"));
  + let b = mock_env(&api, &name, &coins(100, "atom"));
  + let c = mock_env(&api, name, &coins(100, "atom"));
  // and the results are the same
  assert_eq!(a, b);
  