Characters inside HTML tags <code>...</code> are not escaped.

Hey!

Org-mode snippet `=http://<app>-<namespace>.rhcloud.com=` is converted as
```html
<code>http://<app>-<namespace>.rhcloud.com</code>
```
whereas it should be
```html
<code>http://&lt;app&gt;-&lt;namespace&gt;.rhcloud.com</code>
```

Best regards,
Vladimir.