right DEBUG function used

LibreMetric.ino

@@ -125,7 +125,7 @@ void loop() {
   time_t now = time(nullptr);
   now = CentralEuropean.toLocal(now);
   String time = String(ctime(&now));
-  Serial.println(time);
+  DEBUG_PRINTLN(time);
   time.trim();
   time.substring(11,19).toCharArray(time_value, 10);
   int seconds = time.substring(17,19).toInt();