Xslt: fixed potential buffer overflow with null character. Due to shortcomings of the ccv->zero flag implementation in complex value interface, length of the resulting string from ngx_http_complex_value() might either not include terminating null character or include it, so the only safe way to work with the result is to use it as a null-terminated string. Reported by Patrick Wollgast.

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


cat << END >> $NGX_AUTO_CONFIG_H

#ifndef $have
#define $have  1
#endif

END