small fix for CEC

Signed-off-by: Thilo Graf <dbt@novatux.de>

Try to fix unintended switch to HDM1 on tv with enabled
CEC on set top box.

libarmbox/hdmi_cec.cpp

@@ -408,6 +408,8 @@ void hdmi_cec::SetCECState(bool state)
 		}
 #endif
 
+		GetCECAddressInfo();
+
 		message.initiator = logicalAddress;
 		message.destination = CEC_LOG_ADDR_BROADCAST;
 		message.data[0] = CEC_MSG_ACTIVE_SOURCE;