ERC4626 custom asset balance tracking and inflation attack check

[JayusJay]

safe-yields-presale/src/trading/StrategyFundManagerCEX.sol

Lines 65 to 67 in 469cf9c

	function totalAssets() public view override returns (uint256) {
	return IERC20(asset()).balanceOf(address(this)) + fundsInTrading;
	}

Though you are accurately tracking amount of funds being utilized in strategies and the rest, this contract is still susceptible to the inflation attack.

I recomment using only a single state variable to track the balance of the vault and do not rely on asset.balanceOfAddress(this)