message: cleanup: ECDSAContractAccount
diff: @@ -22,8 +22,15 @@ import { Lib_SafeMathWrapper } from "../../libraries/wrappers/Lib_SafeMathWrappe
  */
  contract OVM_ECDSAContractAccount is iOVM_ECDSAContractAccount {
  + /*************
  + * Constants *
  + *************/
  +
  + // TODO: should be the amount sufficient to cover the gas costs of all of the transactions up
  + // to and including the CALL/CREATE which forms the entrypoint of the transaction.
  + uint256 constant EXECUTION_VALIDATION_GAS_OVERHEAD = 25000;
  address constant ETH_ERC20_ADDRESS = 0x4200000000000000000000000000000000000006;
  - uint256 constant EXECUTION_VALIDATION_GAS_OVERHEAD = 25000; // TODO: should be the amount sufficient to cover the gas costs of all of the transactions up to and including the CALL/CREATE which forms the entrypoint of the transaction.
  +
  /********************
  * Public Functions *
  @@ -36,8 +43,8 @@ contract OVM_ECDSAContractAccount is iOVM_ECDSAContractAccount {
  * @param _v Signature `v` parameter.
  * @param _r Signature `r` parameter.
  * @param _s Signature `s` parameter.
  - * @return _success Whether or not the call returned (rather than reverted).
  - * @return _returndata Data returned by the call.
  + * @return Whether or not the call returned (rather than reverted).
  + * @return Data returned by the call.
  */
  function execute(
  bytes memory _transaction,
  @@ -49,8 +56,8 @@ contract OVM_ECDSAContractAccount is iOVM_ECDSAContractAccount {
  override
  public
  returns (
  - bool _success,
  - bytes memory _returndata
  + bool,
  + bytes memory
  )
  {
  bool isEthSign = _signatureType == Lib_OVMCodec.EOASignatureType.ETH_SIGNED_MESSAGE;
  