Managing Refunds in Solidity

if (bidToCheck.blindedBid != keccak256(abi.encodePacked(value, fake, secret))) {
                continue;
            }
            refund += bidToCheck.deposit;
            if (!fake && bidToCheck.deposit >= value) {
                if (placeBid(msg.sender, value))
                    refund -= value;
            }
            bidToCheck.blindedBid = bytes32(0);
        }
        msg.sender.transfer(refund);
    }