zhanghuajie issues

Results 2 issues of


                                            zhanghuajie

set_use_api_switch函数，下图所示可能访问空指针 ![image](https://user-images.githubusercontent.com/22310751/148187484-f31fd3ce-eae4-43f7-a250-2ece08b9311a.png)

set_use_api_switch函数 ![image](https://user-images.githubusercontent.com/22310751/148187367-594b71cd-2a13-44ad-89f4-1229edb6773a.png)