b7dba90062
When a static file larger than NXT_HTTP_STATIC_BUF_SIZE (128K) is served, two buffers are allocated and chained; each retains the whole request memory pool. Starting from 41331471eee7, the completion handler was called once for a linked buffer chain, but the second buffer got lost. This patch improves the completion handler's treatment of static buffers to handle all linked buffers.