out_forward: fix variable
@@ -187,7 +187,7 @@ static int secure_forward_ping(struct flb_upstream_conn *u_conn,
/* [3] Shared key in Hexdigest format */
msgpack_pack_str(&mp_pck, 128);
- msgpack_pack_str_body(&mp_pck, shared_key_digest, 128);
+ msgpack_pack_str_body(&mp_pck, shared_key_hexdigest, 128);
/* [4] Username (disabled) */
msgpack_pack_str(&mp_pck, 0);
