function transferERC721 does not reset nftApprovals if the msg.sender is a delegate

Handle paulius.eth Vulnerability details Impact When the sender is not the owner, the function transferERC721 checks that the sender has nftApprovals set to true. However, after doing the transfer, it does not reset it to false. Maybe that was intended here, but comparing to the function...

nftApprovals not reset in transferERC721

Handle gpersoon Vulnerability details Impact The function transferERC721 checks for nftApprovals, however it never reset the value of nftApprovals. This means if the NFT would end up in the contract again in the future, it could be transferred again without an explicit approval. Proof of Concept...