WcState initialization logic can initialize rx buffer wrongly

Expected: The WcState logic shall not modify bits in the RX buffer unrelated to WcState, so that the corresponding HoldLastValue logic can work as expected. 

Actual: In the case of HoldLast Value the WcState initialization logic can initialize rx buffer wrongly which interferes with recent change on LastHoldValue functionality. LastHoldValue initialized the buffer before WcState initialization and hence the influence.

This occurs in the case if HoldLastValue function is configured by the engineering tool (e.g. ComStudio)