function recoverTokens(address token, address recipient) public lock {
    if (token == rewardToken) {
        require(block.timestamp > endRewardLock, "time");

        // check what isnt claimable by depositors and governance
        // @audit-issue rewardTokenAmount increased on fundStream, but never decreased! this excess underflows
        uint256 excess = ERC20(token).balanceOf(address(this)) - (rewardTokenAmount + rewardTokenFeeAmount);
        ERC20(token).safeTransfer(recipient, excess);

        emit RecoveredTokens(token, recipient, excess);
        return;
    }
    // ...
