Fixed display of long properties.

lib/python/OFS/properties.dtml

@@ -43,7 +43,7 @@ values and click "Save Changes".
   <!--#if "'w' in _['sequence-item'].get('mode', 'awd')"-->
   <!--#if "type in ('int', 'long')"-->
   <input type="text" name="<!--#var id-->:<!--#var type-->" size="35"
-   value="<!--#var "'%d' % getProperty(id)"-->">
+   value="<!--#if "getProperty(id)"--><!--#var "'%d' % getProperty(id)"--><!--#/if-->">
   <!--#elif "type in ('float', 'date')"-->
   <input type="text" name="<!--#var id-->:<!--#var type-->" size="35"
    value="<!--#var "getProperty(id)"-->">