Revert #7964

Somehow the test case doesn't crash anymore and the regression in the
doc generation is fixed.

Fixes #9019

nimdoc/testproject/expected/testproject.html

@@ -1244,6 +1244,14 @@ function main() {
     
   </ul>
 </li>
+<li>
+  <a class="reference reference-toplevel" href="#8" id="58">Vars</a>
+  <ul class="simple simple-toc-section">
+      <li><a class="reference" href="#aVariable"
+    title="aVariable: array[1, int]"><wbr />a<wbr />Variable<span class="attachedType" style="visibility:hidden"></span></a></li>
+
+  </ul>
+</li>
 <li>
   <a class="reference reference-toplevel" href="#12" id="62">Procs</a>
   <ul class="simple simple-toc-section">
@@ -1285,6 +1293,16 @@ function main() {
 <h1><a class="toc-backref" href="#6">Imports</a></h1>
 <dl class="item">
 <a class="reference external" href="subdir/subdir_b/utils.html">subdir/subdir_b/utils</a>
+</dl></div>
+<div class="section" id="8">
+<h1><a class="toc-backref" href="#8">Vars</a></h1>
+<dl class="item">
+<dt id="aVariable"><a name="aVariable"></a><pre><span class="Identifier">aVariable</span><span class="Other">:</span> <span class="Identifier">array</span><span class="Other">[</span><span class="DecNumber">1</span><span class="Other">,</span> <span class="Identifier">int</span><span class="Other">]</span></pre></dt>
+<dd>
+
+
+</dd>
+
 </dl></div>
 <div class="section" id="12">
 <h1><a class="toc-backref" href="#12">Procs</a></h1>