The data pointer in ngx_open_file_t objects must be initialized.

Uninitialized pointer may result in arbitrary segfaults if access_log is used
without buffer and without variables in file path.

Patch by Tatsuhiko Kubo (ticket #268).



git-svn-id: svn://svn.nginx.org/nginx/trunk@5002 73f98a42-aea0-e011-b76d-00259023448c
Events: added check for duplicate "events" directive.



git-svn-id: svn://svn.nginx.org/nginx/trunk@5003 73f98a42-aea0-e011-b76d-00259023448c