Fixed generating chunked response after 46e3542d51b3. If trailers were missing and a chain carrying the last_buf flag had no data in it, then last HTTP/1 chunk was broken. The problem was introduced while implementing HTTP/3 response body generation. The change fixes the issue and reduces diff to the mainline nginx.

/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_CRYPT_H_INCLUDED_
#define _NGX_CRYPT_H_INCLUDED_


#include <ngx_config.h>
#include <ngx_core.h>


ngx_int_t ngx_crypt(ngx_pool_t *pool, u_char *key, u_char *salt,
    u_char **encrypted);


#endif /* _NGX_CRYPT_H_INCLUDED_ */