Update checkpoints.cpp

"hash": "000000000099e3b5fdf2f2c4906eb0c9ea7e4183dbc30c66ce2b682efa8081be",
    "confirmations": 39,
    "size": 249,
    "height": 239143,
    "version": 2,
    "merkleroot": "71b43fe9163a3439ba9732bc56759fb6a622b44c8da0af4291dbd79933f3b5a3",
    "tx": [
        "71b43fe9163a3439ba9732bc56759fb6a622b44c8da0af4291dbd79933f3b5a3"