esp_wifi:add clear ap list interface

components/esp_wifi/include/esp_wifi.h

@@ -463,6 +463,21 @@ esp_err_t esp_wifi_scan_get_ap_num(uint16_t *number);
 esp_err_t esp_wifi_scan_get_ap_records(uint16_t *number, wifi_ap_record_t *ap_records);
 
 
+/**
+  * @brief     Clear AP list found in last scan
+  *
+  * @attention When the obtained ap list fails,bss info must be cleared,otherwise it may cause memory leakage.
+  *
+  * @return
+  *    - ESP_OK: succeed
+  *    - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
+  *    - ESP_ERR_WIFI_NOT_STARTED: WiFi is not started by esp_wifi_start
+  *    - ESP_ERR_WIFI_MODE: WiFi mode is wrong
+  *    - ESP_ERR_INVALID_ARG: invalid argument
+  */
+esp_err_t esp_wifi_clear_ap_list(void);
+
+
 /**
   * @brief     Get information of AP which the ESP32 station is associated with
   *

docs/en/api-guides/wifi.rst

@@ -1267,6 +1267,7 @@ but the connected AP has country info::
         .schan = 1,
         .nchan = 13,
     };
+
 then country info of connected AP's is used.
 
 Following table depicts which country info is used in different Wi-Fi Mode and different country policy, also describe the impact to active scan.