Don't lose pointer to first nonempty buf in ngx_*_sendfile_chain(). In ngx_*_sendfile_chain() when calculating pointer to a first non-zero sized buf, use "in" as iterator. This fixes processing of zero sized buf(s) after EINTR. Otherwise function can return zero sized buf to caller, and later ngx_http_write_filter() logs warning.

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


#ifndef _NGX_SOLARIS_H_INCLUDED_
#define _NGX_SOLARIS_H_INCLUDED_


ngx_chain_t *ngx_solaris_sendfilev_chain(ngx_connection_t *c, ngx_chain_t *in,
    off_t limit);


#endif /* _NGX_SOLARIS_H_INCLUDED_ */