Rewrite calculation of reconnection retry delay for better readability.

Author: aentinger

src/ArduinoIoTCloudTCP.cpp

@@ -358,7 +358,8 @@ ArduinoIoTCloudTCP::State ArduinoIoTCloudTCP::handle_ConnectMqttBroker()
   }
 
   _last_connection_attempt_cnt++;
-  unsigned long const reconnection_retry_delay = min(static_cast<unsigned long>(AIOT_CONFIG_MAX_RECONNECTION_RETRY_DELAY_ms), static_cast<unsigned long>(pow(2, _last_connection_attempt_cnt) * AIOT_CONFIG_RECONNECTION_RETRY_DELAY_ms));
+  unsigned long reconnection_retry_delay = pow(2, _last_connection_attempt_cnt) * AIOT_CONFIG_RECONNECTION_RETRY_DELAY_ms;
+  reconnection_retry_delay = min(reconnection_retry_delay, static_cast<unsigned long>(AIOT_CONFIG_MAX_RECONNECTION_RETRY_DELAY_ms));
   _next_connection_attempt_tick = millis() + reconnection_retry_delay;
 
   DEBUG_ERROR("ArduinoIoTCloudTCP::%s could not connect to %s:%d", __FUNCTION__, _brokerAddress.c_str(), _brokerPort);