bugfix: fix the compatibility issue for freenginx.

Author: u5surf

src/ngx_http_lua_ssl_client_helloby.c

@@ -222,6 +222,7 @@ ngx_http_lua_ssl_client_hello_handler(ngx_ssl_conn_t *ssl_conn,
 
 #if (nginx_version > 1029001)
 #ifdef SSL_CLIENT_HELLO_SUCCESS
+#if !defined freenginx
     /* see commit 0373fe5d98c1515640 for more details */
     rc = ngx_ssl_client_hello_callback(ssl_conn, al, arg);
 
@@ -230,6 +231,7 @@ ngx_http_lua_ssl_client_hello_handler(ngx_ssl_conn_t *ssl_conn,
     }
 #endif
 #endif
+#endif
 
 #if (nginx_version < 1017009)
     ngx_reusable_connection(c, 0);