MIDI tracer: don't update ports if audio engine is not running when ports_changed() is called
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@ -166,6 +166,10 @@ MidiTracer::ports_changed ()
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_midi_port_list->clear ();
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if (!AudioEngine::instance()->running()) {
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return;
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}
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PortManager::PortList pl;
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AudioEngine::instance()->get_ports (DataType::MIDI, pl);
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