bugfix: fix the compatibility issues.

Author: zhuizhuhaomeng

src/ngx_stream_lua_ssl_certby.c

@@ -1000,7 +1000,9 @@ ngx_stream_lua_ffi_req_shared_ssl_ciphers(ngx_stream_lua_request_t *r,
 
     *err = "BoringSSL is not supported for SSL cipher operations";
     return NGX_ERROR;
-
+#elif OPENSSL_VERSION_NUMBER < 0x101010afL
+    *err = "OpenSSL < 1.1.1a is not supported for SSL cipher operations";
+    return NGX_ERROR;
 #else
     ngx_ssl_conn_t         *ssl_conn;
     STACK_OF(SSL_CIPHER)   *sk, *ck;

src/ngx_stream_lua_ssl_client_helloby.c

@@ -219,12 +219,14 @@ ngx_stream_lua_ssl_client_hello_handler(ngx_ssl_conn_t *ssl_conn,
     }
 
 #if (nginx_version > 1029001)
+#ifdef SSL_CLIENT_HELLO_SUCCESS
     /* see commit 0373fe5d98c1515640 for more details */
     rc = ngx_ssl_client_hello_callback(ssl_conn, al, arg);
 
     if (rc == 0) {
         return rc;
     }
+#endif
 #endif
 
     dd("first time");