KeyError: fields

[idefix]

How to Reproduce

While doing a GET operation on /ticket/6300, Trac issued an internal error.

Steps to reproduce:

1. go to comment:ticket:6300:1
2. click on the ​diff link

Request parameters:

{'action': u'diff', 'id': u'6300', 'version': u'1'}

User agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; nl; rv:1.9.2.6) Gecko/20100625 Firefox/3.6.6

System Information

System information not available

Enabled Plugins

Plugin information not available

Python Traceback

Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/trac/web/main.py", line 513, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.6/site-packages/trac/web/main.py", line 246, in dispatch
    self._post_process_request(req, *resp)
  File "/usr/lib/python2.6/site-packages/trac/web/main.py", line 359, in _post_process_request
    resp = f.post_process_request(req, *resp)
  File "build/bdist.linux-i686/egg/mastertickets/web_ui.py", line 64, in post_process_request
    for field, field_data in change['fields'].iteritems():
KeyError: 'fields'

[nielx]

Fixed. Thanks for reporting!