Crash in thrust checker

[István Váradi]

09:28:00: Checker <mlx.checks.ThrustChecker object at 0x038420D0> failed
09:28:00: Traceback (most recent call last):
09:28:00: File "mlx\acft.pyc", line 253, in handleState
09:28:00: File "mlx\checks.pyc", line 861, in check
09:28:00: File "mlx\checks.pyc", line 1446, in logFault
09:28:00: File "mlx\flight.pyc", line 338, in handleFault
09:28:00: File "mlx\logger.pyc", line 294, in fault
09:28:00: File "mlx\logger.pyc", line 347, in _addEntry
09:28:00: File "mlx\logger.pyc", line 383, in _addFault
09:28:00: File "mlx\logger.pyc", line 154, in addEntry
09:28:00: TypeError: 'property' object is not callable

[István Váradi <ivaradi@…>]

In [8b5838e0b51d394f2ebe44124c3045284d093d90]:

Using a lambda function instead of directly the property (re #172)