Added missing mac_cmd_buf_idx_to_repeat to LoRaMacCommand class

- Reordered LoRaWANStack internal variables for more compact code

features/lorawan/LoRaWANStack.cpp

@@ -87,8 +87,8 @@ lorawan_status_t LoRaWANStack::set_application_port(uint8_t port)
 LoRaWANStack::LoRaWANStack()
 : _loramac(_lora_time), _lora_phy(_lora_time),
   _device_current_state(DEVICE_STATE_NOT_INITIALIZED), _mac_handlers(NULL),
-  _num_retry(1), _queue(NULL), _duty_cycle_on(MBED_CONF_LORA_DUTY_CYCLE_ON),
-  _app_port(INVALID_PORT)
+  _num_retry(1), _app_port(INVALID_PORT), _duty_cycle_on(MBED_CONF_LORA_DUTY_CYCLE_ON),
+  _queue(NULL)
 {
 #ifdef MBED_CONF_LORA_APP_PORT
     if (is_port_valid(MBED_CONF_LORA_APP_PORT)) {

features/lorawan/LoRaWANStack.h

@@ -456,10 +456,9 @@ private:
     loramac_tx_message_t _tx_msg;
     loramac_rx_message_t _rx_msg;
     uint8_t _num_retry;
-    events::EventQueue *_queue;
-    bool _duty_cycle_on;
     uint8_t _app_port;
-
+    bool _duty_cycle_on;
+    events::EventQueue *_queue;
 
 #if defined(LORAWAN_COMPLIANCE_TEST)
     /**

features/lorawan/lorastack/mac/LoRaMacCommand.cpp

@@ -209,6 +209,7 @@ void LoRaMacCommand::parse_mac_commands_to_repeat()
     } else {
         mac_cmd_in_next_tx = false;
     }
+    mac_cmd_buf_idx_to_repeat = cmd_cnt;
 }
 
 
@@ -426,7 +427,6 @@ lorawan_status_t LoRaMacCommand::process_mac_commands(uint8_t *payload, uint8_t
 
 bool LoRaMacCommand::is_sticky_mac_command_pending()
 {
-    //DEAD CODE: mac_cmd_buf_idx_to_repeat is never set
     if (mac_cmd_buf_idx_to_repeat > 0) {
         return true;
     }