IE7 and IE8 show [Stack overflow] error when using DT and/or DD tags

[crabckeditor]

[Browser] MSIE 7.x / MSIE 8.x

[Error Details] Alert: Stack overflow at line: xx

[Procedures]

1. Go to your CKeditor or demo page
   
   • http://ckeditor.com/demo
2. Click [Source] to edit source
   
3. Type one of followings:
   
   • <dd>aaa</dd>
     
   • <dt>aaa</dt>
     
   • <dt>aaa</dt><dd>bbb</dd>
     
   • <dl><dt>aaa</dt><dd>bbb</dd> (IE7 only)
     
4. Click [Source] to preview the content
   
5. Click [Source] to edit the source again
   
6. Error [Stack overflow at line: xx] pop-up as alert message

[Saare]

Confirmed on demo, WFM on trunk, so probably a dup of #6868.