LFO controller now has correct frequency with multiple connections.

m_bufferLastUpdated is now correctly set to the current frame upon updating
the buffer.

src/core/LfoController.cpp

@@ -113,6 +113,7 @@ void LfoController::updateValueBuffer()
 	}
 
 	m_currentPhase = absFraction( phase - m_phaseOffset );
+	m_bufferLastUpdated = s_periods;
 }
 
 void LfoController::updatePhase()