Fixing compile problems with net audio streaming

src/Audiosignals/VAAudiofileSignalSource.cpp

@@ -164,7 +164,7 @@ void CVAAudiofileSignalSource::HandleRegistration(IVACore* pParentCore)
 	m_pAssociatedCore = pParentCore;
 }
 
-void CVAAudiofileSignalSource::HandleUnregistration(IVACore* pParentCore)
+void CVAAudiofileSignalSource::HandleUnregistration( IVACore* )
 {
 	m_pAssociatedCore = nullptr;
 }