EIP1594 - Different return values for canTransfer and canTransferFrom

[cleanunicorn]

The EIP spec defines the 2 functions, each one returning 2 values:
https://github.com/SecurityTokenStandard/EIP-Spec/blob/master/eip/eip-1594.md#cantransfer--cantransferfrom

function canTransfer(address _to, uint256 _value, bytes _data) external view returns (byte, bytes32);
function canTransferFrom(address _from, address _to, uint256 _value, bytes _data) external view returns (byte, bytes32);

But the implementation returns 3 values:

EIP-Spec/contracts/ERC1594/IERC1594.sol

Lines 20 to 22 in cef4971

	// Transfer Validity
	function canTransfer(address _to, uint256 _value, bytes _data) external view returns (bool, byte, bytes32);
	function canTransferFrom(address _from, address _to, uint256 _value, bytes _data) external view returns (bool, byte, bytes32);

EIP-Spec/contracts/ERC1594/ERC1594.sol

Line 124 in cef4971

function canTransfer(address _to, uint256 _value, bytes _data) external view returns (bool, byte, bytes32) {

EIP-Spec/contracts/ERC1594/ERC1594.sol

Line 149 in cef4971

function canTransferFrom(address _from, address _to, uint256 _value, bytes _data) external view returns (bool, byte, bytes32) {

If the implementation is correct, the EIP spec should be updated to reflect the truth.
ethereum/EIPs#1594