Merge pull request #11596 from kivaisan/fix_loramac_initialization_order

LoRa: Fix build warning about _ongoing_tx_msg

Author: 0xc0170

features/lorawan/lorastack/mac/LoRaMac.cpp

@@ -76,8 +76,8 @@ LoRaMac::LoRaMac()
       _mcps_indication(),
       _mcps_confirmation(),
       _mlme_indication(),
-      _ongoing_tx_msg(),
       _mlme_confirmation(),
+      _ongoing_tx_msg(),
       _is_nwk_joined(false),
       _can_cancel_tx(true),
       _continuous_rx2_window_open(false),