Markdown --- causes problems with RSS feed (invalid xhtml)

I am using Gitlab 7.3.2 f092e53e.

If you submit an issue, where you use the markdown --- in the description of the issue to generate a horizontal rule, the resulting rss feed on the dashboard reads like this

...
<entry>
...
<summary type="xhtml">
<div xmlns='http://www.w3.org/1999/xhtml'>
<p>foo</p>
<hr>
<p>bar</p>
</div>
</summary>
</entry>
...

The <hr> is not valid xhtml and causes most (if not all) rss readers to stop displaying anything (not even the other, valid entrys) of that feed.

Of course there may be other possibilities to generate invalid xhtml.

mentioned in merge request !344 (merged)

Proposed fix in !344 (merged).

Milestone changed to 7.9

Status changed to closed by commit 90aa870c

mentioned in commit e4ac6bbf

mentioned in merge request !14785