GET_LOCK: Fractional part of timeout is ignored

MariaDB [test]> select get_lock('x', 1);

+------------------+

| get_lock('x', 1) |

+------------------+

|                1 |

+------------------+

1 row in set (0.00 sec)

MariaDB [test]> select get_lock('x', 1.9);

+--------------------+

| get_lock('x', 1.9) |

+--------------------+

|                  0 |

+--------------------+

1 row in set (1.00 sec)