Merge branch 'bugfix/fix_iperf_example_crash_issue' into 'master'

example: Scan failure should not cause system crash

Closes WIFI-3306

See merge request espressif/esp-idf!11998

examples/bluetooth/bluedroid/ble/blufi/main/blufi_example_main.c

@@ -371,7 +371,7 @@ static void example_event_callback(esp_blufi_cb_event_t event, esp_blufi_cb_para
             .channel = 0,
             .show_hidden = false
         };
-        ESP_ERROR_CHECK(esp_wifi_scan_start(&scanConf, true));
+        esp_wifi_scan_start(&scanConf, true);
         break;
     }
     case ESP_BLUFI_EVENT_RECV_CUSTOM_DATA:

examples/bluetooth/esp_ble_mesh/ble_mesh_wifi_coexist/components/iperf/cmd_wifi.c

@@ -194,7 +194,7 @@ static bool wifi_cmd_sta_scan(const char *ssid)
     scan_config.ssid = (uint8_t *) ssid;
 
     ESP_ERROR_CHECK( esp_wifi_set_mode(WIFI_MODE_STA) );
-    ESP_ERROR_CHECK( esp_wifi_scan_start(&scan_config, false) );
+    esp_wifi_scan_start(&scan_config, false);
 
     return true;
 }