Stream pointer might be NULL

[QiAnXinCodeSafe]

“fp”在这里被赋值

iot_remote_access/src/core/ca.c

Line 37 in 80ebc4c

fp = fopen(DEFAULT_ROOT_PEM_NAEM, "w+");

当fopen失败，fp的值可能为NULL，导致空指针解引用

iot_remote_access/src/core/ca.c

Line 39 in 80ebc4c

ret = fwrite(remote_debug_cert, 1, strlen(remote_debug_cert), fp);