[SDK Patch] SSL issue on ESP8266_NONOS_SDK_V1.5.2

[ESP_Faye]

Here is a patch based on ESP8266_NONOS_SDK_V1.5.2 solved 2 issues:
1. Misbehavior when ESP8266 runs as SSL server.
2. The return value of wifi_station_get_connect_status may be wrong in certain cases.

Sorry for the inconvenience.

附件为基于 ESP8266_NONOS_SDK_V1.5.2 的 patch，解决了以下两个问题：
1. ESP8266 作为 SSL server 时可能出现异常。
2. 某些情况下 wifi_station_get_connect_status 返回值不准确。

抱歉给您带来不便。