Make reduction value of dynamics compressor zero when no sources are connected

Source/modules/webaudio/AudioNode.h

Index: Source/modules/webaudio/AudioNode.h
diff --git a/Source/modules/webaudio/AudioNode.h b/Source/modules/webaudio/AudioNode.h
index 91d368353e26ed52ef03b2f56d4b0dbfb02eae97..7c80fb1864ecba2a1350eb77059e7a7791f74878 100644
--- a/Source/modules/webaudio/AudioNode.h
+++ b/Source/modules/webaudio/AudioNode.h
@@ -120,6 +120,10 @@ public:
     virtual void initialize();
     virtual void uninitialize();
 
+    // Clear internal state when the node is deactivated. This prevents the node
+    // from providing the incorrect data based on the last-known data inside.
+    virtual void clearInternalState();
+
     bool isInitialized() const { return m_isInitialized; }
 
     unsigned numberOfInputs() const { return m_inputs.size(); }