Don't use default input/output device names when setting up an AudioDeviceManager if no channels have been requested

modules/juce_audio_devices/audio_io/juce_AudioDeviceManager.cpp

@@ -336,10 +336,10 @@ void AudioDeviceManager::insertDefaultDeviceNames (AudioDeviceSetup& setup) cons
 {
     if (auto* type = getCurrentDeviceTypeObject())
     {
-        if (setup.outputDeviceName.isEmpty())
+        if (numOutputChansNeeded > 0 && setup.outputDeviceName.isEmpty())
             setup.outputDeviceName = type->getDeviceNames (false) [type->getDefaultDeviceIndex (false)];
 
-        if (setup.inputDeviceName.isEmpty())
+        if (numInputChansNeeded > 0 && setup.inputDeviceName.isEmpty())
             setup.inputDeviceName = type->getDeviceNames (true) [type->getDefaultDeviceIndex (true)];
     }
 }