VST3 Client: Fix a compiler error in the VST3 wrapper when a plug-in uses the legacy PreferredChannelConfigurations option

modules/juce_audio_plugin_client/VST3/juce_VST3_Wrapper.cpp

@@ -3299,7 +3299,7 @@ public:
 
        #ifdef JucePlugin_PreferredChannelConfigurations
         short configs[][2] = { JucePlugin_PreferredChannelConfigurations };
-        if (! AudioProcessor::containsLayout (requested, configs))
+        if (! AudioProcessor::containsLayout (requestedLayout, configs))
             return kResultFalse;
        #endif