Ngx_xss v0.02: fixed a bug to prevent responses from gzipping

Hi, all~

I’m glad to announce the v0.02 release of the ngx_xss module:

http://github.com/agentzh/xss-nginx-module/tarball/v0.02

This module provides native cross-site scripting (XSS) support in
nginx, and cross-site GET via JSONP in particular. Please visit the
project homepage for more details:

http://github.com/agentzh/xss-nginx-module

This release fixes a nasty bug in Content-Type header handling. The
previous version does not clear r->headers_out.content_type_lowcase
which sadly prevents responses from being compressed by the
ngx_http_gzip_filter_module if configured.

Thanks my teammate kindy++ for catching it in our production environment
:stuck_out_tongue:

Cheers,
-agentzh