Sub filter: fixed incomplete last buffer on partial match. If a pattern was partially matched at a response end, partially matched string wasn't send. E.g., a response "fo" was truncated to an empty response if partially mathed by a pattern "foo".

# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


cat << END >> $NGX_AUTO_CONFIG_H

#ifndef $have
#define $have  $value
#endif

END