createMessage doesn't handle None message

Traceback (most recent call last):
  File "C:\Users\timoteus\Documents\GitHub\M2Q\m2q_midi.py", line 130, in __call__
    remoteMessage = m2q_comm.createMessage(4, channel, note, None)
  File "C:\Users\timoteus\Documents\GitHub\M2Q\m2q_comm.py", line 14, in createMessage
    if note < 0 or note > 127:
TypeError: '<' not supported between instances of 'NoneType' and 'int'