WMBUS: avoid CRC errors when used with a culfw that does not support RSSI/LQI
WMBUS: avoid CRC errors when used with a culfw that does not support RSSI/LQIView Changes
Source: WMBUS: avoid CRC errors when used with a culfw that does not support RSSI/LQI (http://sourceforge.net/p/fhem/code/6562/)