potential null dereference

In file /src/http/ngx_http_upstream.c, function ngx_http_upstream_finalize_request

// if u->pipe == NULL, ngx_http_file_cache_free(r->cache, u->pipe->temp_file); will dereference a null pointer, it's that right ?

// Regards
// Alex

 if (u->store && u->pipe && u->pipe->temp_file
        && u->pipe->temp_file->file.fd != NGX_INVALID_FILE)
    {
        if (ngx_delete_file(u->pipe->temp_file->file.name.data)
            == NGX_FILE_ERROR)
        {
            ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
                          ngx_delete_file_n " \"%s\" failed",
                          u->pipe->temp_file->file.name.data);
        }
    }

#if (NGX_HTTP_CACHE)

    if (r->cache) {

      ......

        ngx_http_file_cache_free(r->cache, u->pipe->temp_file);
    }