Modified compile-time error to warn the user that juce_audio_devices module is also needed when building AUv3s

modules/juce_audio_plugin_client/juce_audio_plugin_client_Standalone.cpp

@@ -23,7 +23,7 @@
 */
 
 #if ! JUCE_MODULE_AVAILABLE_juce_audio_utils
- #error To compile AudioUnitv3 and/or Standalone plug-ins, you need to add the juce_audio_utils module!
+ #error To compile AudioUnitv3 and/or Standalone plug-ins, you need to add the juce_audio_utils and juce_audio_devices modules!
 #endif
 
 #include "Standalone/juce_StandaloneFilterApp.cpp"