Fix: Fixed invalid form field type for PDNSR search form.

lib/hawat/blueprints/pdnsr/forms.py

@@ -53,7 +53,7 @@ class PDNSRSearchForm(flask_wtf.FlaskForm):
         ],
         default = ''
     )
-    limit = vial.forms.SelectFieldWithNone(
+    limit = wtforms.SelectField(
         lazy_gettext('Pager limit:'),
         validators = [
             wtforms.validators.Optional()