bugfix: undefined symbol SSL_client_hello_get0_ext when linking again…

[zhuizhuhaomeng]

…st libressl.

I hereby granted the copyright of the changes in this pull request
to the authors of this lua-nginx-module project.

[asyslinux]

Need add additional #ifdef block in

lua-nginx-module/src/ngx_http_lua_ssl_client_helloby.c

Line 631 in 1293aae

ngx_http_lua_ffi_ssl_get_client_hello_ext(ngx_http_request_t *r,

#ifdef LIBRESSL_VERSION_NUMBER
    *err = "LibreSSL does not support by ssl_client_hello_by_lua*";
    return NGX_ERROR;
#else

....

#endif  /* LIBRESSL_VERSION_NUMBER */

[zhuizhuhaomeng]

please try again

[asyslinux]

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful