Correctly handle nil clock passed to +[MIKMIDICommand(MIKMIDINoteEventToCommands) commandsFromNoteEvent:clock:].
Correctly handle nil clock passed to +[MIKMIDICommand(MIKMIDINoteEventToCommands) commandsFromNoteEvent:clock:].

bamboostick/MIKMIDI,bamboostick/MIKMIDI,bamboostick/MIKMIDI