Don't clear ENS count in cumulative mode

src/senddata.cpp

@@ -154,7 +154,8 @@ void sendData() {
       payload.addSensor(sensor_read(1));
       SendPayload(SENSOR1PORT, prio_normal);
 #if (COUNT_ENS)
-      cwa_clear();
+      if (cfg.countermode != 1)
+        cwa_clear();
 #endif
       break;
 #endif