Hopefully fix issue2550929

(Edit error on message_type when no content is given)

Author: schlatterbeck

roundup/cgi/form_parser.py

@@ -597,6 +597,8 @@ def parse(self, create=0, num_re=re.compile('^\d+$')):
                 # Avoid emptying the file
                 if props.has_key('content') and not props['content']:
                     del props ['content']
+                    if id is not None and id.startswith('-'):
+                        del all_props[(cn, id)]
         return all_props, all_links
 
     def parse_file(self, fpropdef, fprops, v):