Coredump and Duo Auth

lib/MqttLogger/src/MqttLogger.cpp

@@ -83,7 +83,7 @@ void MqttLogger::sendBuffer()
         {
             doSerial = true;
         }
-        if (doSerial)
+        if (doSerial && coredumpPrinted)
         {
             Serial.write(this->buffer, this->bufferCnt);
             Serial.println();

lib/MqttLogger/src/MqttLogger.h

@@ -16,6 +16,8 @@
 
 #define MQTT_MAX_PACKET_SIZE 1024
 
+extern bool coredumpPrinted;
+
 enum MqttLoggerMode {
     MqttAndSerialFallback = 0,
     SerialOnly = 1,