Fixed some bugs with the messages array: use mutableCopy so we're sure it's a mutable array (duh) and make sure that there is an array present when we start listening for messages.
Fixed some bugs with the messages array: use mutableCopy so we're sure it's a mutable array (duh) and make sure that there is an array present when we start listening for messages.

krevis/MIDIApps,krevis/MIDIApps,krevis/MIDIApps,krevis/MIDIApps,DouglasHeriot/MIDIApps,DouglasHeriot/MIDIApps,krevis/MIDIApps,DouglasHeriot/MIDIApps