erase bridge id from mapMintKeysMempool incase of fail
erase bridge id from mapMintKeysMempool incase of fail


Former-commit-id: d9c3d62513ba90bb87a400c0b8a4a7e7e6a70047
syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin