Fixed Code style warning.

Author: Juha Heiskanen

source/MAC/IEEE802_15_4/mac_pd_sap.c

@@ -315,7 +315,6 @@ static int8_t mac_data_interface_tx_done_cb(protocol_interface_rf_mac_setup_s *r
 
     if (status == PHY_LINK_CCA_PREPARE) {
         if (rf_ptr->fhss_api) {
-            uint8_t *synch_info = NULL;
             mac_pre_build_frame_t *active_buf = rf_ptr->active_pd_data_request;
             if (!active_buf) {
                 return -1;
@@ -324,7 +323,7 @@ static int8_t mac_data_interface_tx_done_cb(protocol_interface_rf_mac_setup_s *r
             if (active_buf->fcf_dsn.frametype == FC_BEACON_FRAME) {
                 // FHSS synchronization info is written in the end of transmitted (Beacon) buffer
                 dev_driver_tx_buffer_s *tx_buf = &rf_ptr->dev_driver_tx_buffer;
-                synch_info = tx_buf->buf + rf_ptr->dev_driver->phy_driver->phy_header_length + tx_buf->len - FHSS_SYNCH_INFO_LENGTH;
+                uint8_t *synch_info = tx_buf->buf + rf_ptr->dev_driver->phy_driver->phy_header_length + tx_buf->len - FHSS_SYNCH_INFO_LENGTH;
                 rf_ptr->fhss_api->write_synch_info(rf_ptr->fhss_api, synch_info, 0, FHSS_SYNCH_FRAME, 0);
             }
             // Change to destination channel and write synchronization info to Beacon frames here