Tokens put into auction are first airdropped to a specific _recipient address.
MinterContract.sol#L282
Then, they are transferred from that address to the auction winner:
AuctionDemo.sol#L113
If for any reason the ownerOfToken didnt approve the token, move it, its address is compromised, or decided not to transfer it, the whole transaction will revert, preventing any participant to receive their funds.
Mint the airdropped token to a escrow contract with an approval to be transferred upon a call from the claimAuction() function.
