Replacing return type int with bool - no error code is retured so no reason for returning an integer

Author: aentinger

src/ArduinoIoTCloud.cpp

@@ -83,22 +83,22 @@ void ArduinoIoTCloudClass::mqttClientBegin(Client& net)
   _mqttClient.setOptions(mqttOpt.keepAlive, mqttOpt.cleanSession, mqttOpt.timeout);
 }
 
-int ArduinoIoTCloudClass::connect()
+bool ArduinoIoTCloudClass::connect()
 {
   // Username: device id
   // Password: empty
   if (!_mqttClient.connect(_id.c_str())) {
-    return 0;
+    return false;
   }
   _mqttClient.subscribe(_stdinTopic);
   _mqttClient.subscribe(_dataTopicIn);
 
-  return 1;
+  return true;
 }
 
 bool ArduinoIoTCloudClass::disconnect()
 {
-    return _mqttClient.disconnect();
+  return _mqttClient.disconnect();
 }
 
 void ArduinoIoTCloudClass::poll()

src/ArduinoIoTCloud.h

@@ -28,7 +28,7 @@ class ArduinoIoTCloudClass {
   static const int RECONNECTION_TIMEOUT = 2000;
   const mqttConnectionOptions mqttOpt = {30, false, 1500};
 
-  int connect();
+  bool connect();
   bool disconnect();
 
   void poll(); /* Attention: Function is deprecated - use 'update' instead */