[BUG] IssueFrom/RedeemFrom with a locked address does not work correctly

[YoshihitoAso]

Describe the bug

The following is the current code.

function issueFrom(address _target_address, address _locked_address, uint256 _amount)
        public
        onlyOwner()
    {
        // locked_addressを指定した場合：ロック資産に対して追加発行を行う
        // locked_addressを指定しない場合：アカウントアドレスの残高に対して追加発行を行う
        if (_locked_address != address(0)) {
            // ロック資産の更新
            locked[_target_address][_locked_address] = lockedOf(_target_address, _locked_address).add(_amount);
            // 総発行数量の更新
            totalSupply = totalSupply.add(_amount);
        } else {
            // アカウント残高の更新
            balances[_target_address] = balanceOf(_target_address).add(_amount);
            // 総発行数量の更新
            totalSupply = totalSupply.add(_amount);
        }
        emit Issue(msg.sender, _target_address, _locked_address, _amount);
    }

locked[_target_address][_locked_address] = lockedOf(_target_address, _locked_address).add(_amount);

There is an error in the logic in this section.

The correct code is as follows.

locked[_locked_address][_target_address] = lockedOf(_locked_address, _target_address).add(_amount);