[PATCH 0 of 1] Fix infinite loop on NGX_DECLINED

[Will Hawkins]

Hello Maxim (and community)!

First, I am a huge fan of freenginx. I have switched all my installations
to use freenginx and support your tremendous effort to protect the community.

I was writing a module when I noticed that using NGX_DECLINED as the rc
when calling ngx_http_finalize_request causes an infinite loop because
the phase handler index is not updated before phase processing is resumed.

A simple one-line change seems to fix the problem. I have prepared a patch
and tried very hard to make sure that I followed all the rules for contributing.
That said, I am sure that I missed a step or did something wrong.

If the patch is helpful but needs changes, please let me know -- I would be
more than happy to get things fixed up appropriately.

I have run all tests with the patch applied and everything seems to pass.

Thank you, again, for all that you do.