First Flight #17: Dussehra

Missing checks for address(0) when assigning values to address state variables

Check for address(0) when assigning values to address state variables.

• Found in src/ChoosingRam.sol Line: 30

  ramNFT = RamNFT(_ramNFT);

• Found in src/Dussehra.sol Line: 48

  ramNFT = RamNFT(_ramNFT);

• Found in src/Dussehra.sol Line: 49

  choosingRamContract = ChoosingRam(_choosingRamContract);

• Found in src/RamNFT.sol Line: 46

  choosingRamContract = _choosingRamContract;