Collector #479: Catalog tab now correctly puts "Unknown" in the type column...

Collector #479: Catalog tab now correctly puts "Unknown" in the type column for cataloged objects with no meta_type metadata column

lib/python/Products/ZCatalog/dtml/catalogView.dtml

@@ -71,13 +71,11 @@ function toggleSelect() {
     </td>
     <td align="left" valign="top">
     <div class="form-text">
-      <dtml-with sequence-item only>
-        <dtml-if name="meta_type">
+      <dtml-if expr="has_key('meta_type') and meta_type">
         <dtml-var name="meta_type" size="15">
       <dtml-else>
         <i>Unknown</i>
       </dtml-if>
-      </dtml-with>
     </div>
     </td>
   </tr>