Forgotten NTP command

ampel-firmware/util.cpp

@@ -53,6 +53,7 @@ namespace ntp {
     Serial.println(time);
     if (connected_at_least_once) {
       Serial.println(F("NTP update already happened. Not changing anything."));
+      return;
     }
     Serial.print(F("Setting UNIX time to : "));
     Serial.println(unix_seconds);