Fix: hard filter switching

src/ITAUPConvolution.cpp

@@ -232,8 +232,15 @@ void ITAUPConvolution::ExchangeFilter( ITAUPFilter* pNewFilter, const int iExcha
 	// Nächstes Filter in die Austausch-Queue einfügen
 	FilterUpdate oUpdate;
 	oUpdate.pFilter          = pNewFilter;
-	oUpdate.iExchangeMode    = ( iExchangeFadingFunction == ITABase::FadingFunction::SWITCH ? (int)m_iExchangeFadingFunction : iExchangeFadingFunction );
-	oUpdate.iCrossfadeLength = ( iCrossfadeLength == ITABase::FadingFunction::SWITCH ? (int)m_iCrossfadeLength : iCrossfadeLength );
+	oUpdate.iExchangeMode = iExchangeFadingFunction;
+	if (iCrossfadeLength < 0)
+	{
+		oUpdate.iCrossfadeLength = 0;
+	}
+	else
+	{
+		oUpdate.iCrossfadeLength = iCrossfadeLength;
+	}
 	m_qExchangeFilters.push( oUpdate );
 }