rss feeds of private forum categories still viewable but always empty

[joeri]

When you revoke the anonymous view permission from a forum category, then the rss feed links will still be visible on all forum/topic pages of that category. When you click on them, you will always load an empty rss feed, since the loading of rss feeds checks for the existence of the anonymous view permission. We can resolve this in two ways:

• remove the links from the forum.jsp and topic.jsp pages when there is no permission
• leave the links in place, but when they are opened, add a single post to the rss feed stating that this feed is not publicly viewable

I would go for the first solution, because it seems a little stupid to have an rss feed without any posts.