FHSS: Do not send TX failure if TX in progress in channel change

Author: Jarkko Paso

source/MAC/IEEE802_15_4/mac_fhss_callbacks.c

@@ -66,10 +66,7 @@ int mac_set_channel(const fhss_api_t *fhss_api, uint8_t channel_number)
     if (!mac_setup) {
         return -1;
     }
-    // If TX is active, send internal CCA fail event. MAC state machine would crash without TX done event.
-    if (mac_setup->macRfRadioTxActive == true) {
-        mac_setup->dev_driver->phy_driver->phy_tx_done_cb(mac_setup->dev_driver->id, 1, PHY_LINK_TX_FAIL, 0, 0);
-    }
+
     return mac_mlme_rf_channel_change(mac_setup, channel_number);
 }