Signed-off-by: Robert D Anderson robander@us.ibm.com

This avoids the "missing variable" error and the bad "Undefined variable" generated text when UL is nested past the 4th level in PDF.

Fix uses the code update @jelovirt suggested in #2824.

Tested with the following list nested to 9 levels, all of which now work (no errors, no bad text in place of the bullet):

<ul>
<li>here's a list<ul>
<li>second level<ul>
<li>third level<ul>
<li>fourth level<ul>
<li>fifth<ul>
<li>six<ul>
<li>seven<ul>
<li>eight<ul>
<li>nine!!!!</li>
</ul></li>
</ul></li>
</ul></li>
</ul></li>
</ul></li>
</ul></li>
</ul></li>
</ul></li>
<li>well that was exhausting</li>
</ul>