added isAllowedToken, moreThanZero modifier to depositCollateralAndMi…

[AAYUSH-GUPTA-coder]

…ntDsc()

added isAllowedToken, moreThanZero modifier to depositCollateralAndMintDsc()

I think it is better practice

[EngrPips]

Hello @AAYUSH-GUPTA-coder, Thanks for this contribution. This will be attended to appropriately as soon as possible.

[AAYUSH-GUPTA-coder]

Sorry, closing this.

Both functions:

depositCollateral(_tokenCollateralAddress, _amountCollateral);  
mintDsc(_amountDscToMint);  

already validating the parameters, so there's no need to check them again.

[EngrPips]

Thanks for your diligence @AAYUSH-GUPTA-coder