Some users may not be able to withdraw till the end of the rewardsCycle, due to possible underflow in the function beforeWithdraw()

Lines of code Vulnerability details Impact In xERC4626.sol If an underflow occur in the function beforeWithdraw, some users may not be able to withdraw till the end of the rewardsCycle. storedTotalAssets is a cached value of total assets, which will only include the unlockedRewards, when the whol...