Fix build error with newest AAX SDK

modules/juce_audio_plugin_client/AAX/juce_AAX_Wrapper.cpp

@@ -918,9 +918,11 @@ struct AAXClasses
 
             for (int parameterIndex = 0; parameterIndex < numParameters; ++parameterIndex)
             {
+                AAX_CString paramName (audioProcessor.getParameterName (parameterIndex, 31).toRawUTF8());
+
                 AAX_IParameter* parameter
                     = new AAX_CParameter<float> (IndexAsParamID (parameterIndex),
-                                                 audioProcessor.getParameterName (parameterIndex, 31).toRawUTF8(),
+                                                 paramName,
                                                  audioProcessor.getParameterDefaultValue (parameterIndex),
                                                  AAX_CLinearTaperDelegate<float, 0>(),
                                                  AAX_CNumberDisplayDelegate<float, 3>(),