qlog: "Revert to this revision" does not work

[IWATA Hidetaka]

Trunk code(r1344) crashes with below traceback when executing "Revert to this revision" in qlog dialog.
"Update to this Revision" and "Reverse cherry pick" also crash.

bzr: ERROR: exceptions.NameError: global name 'gp' is not defined

Traceback (most recent call last):
  File "C:/Program Files/Bazaar/plugins\qbzr\lib\logwidget.py", line 453, in revert_to_revision
  File "C:/Program Files/Bazaar/plugins\qbzr\lib\logwidget.py", line 404, in sub_process_action
NameError: global name 'gp' is not defined

bzr 2.3b4 on python 2.6.6 (win32)
arguments: ['C:\\Program Files\\Bazaar\\tbzrcommand.exe', '--command=log', '--file=D:\\BZR\\tortoisebzr']
encoding: 'cp932', fsenc: 'mbcs', lang: 'ja'
plugins:
  bash_completion C:\Program Files\Bazaar\plugins\bash_completion [2.3b4]
  bzrtools C:\Program Files\Bazaar\plugins\bzrtools [2.3.0]
  colo C:\Program Files\Bazaar\plugins\colo [0.2.1dev]
  explorer C:\Program Files\Bazaar\plugins\explorer [1.1.3dev]
  fastimport C:\Program Files\Bazaar\plugins\fastimport [0.10.0dev]
  launchpad C:\Program Files\Bazaar\plugins\launchpad [2.3b4]
  loom C:\Program Files\Bazaar\plugins\loom [2.2.1dev]
  netrc_credential_store C:\Program Files\Bazaar\plugins\netrc_credential_store [2.3b4]
  news_merge C:\Program Files\Bazaar\plugins\news_merge [2.3b4]
  pipeline C:\Program Files\Bazaar\plugins\pipeline [1.0.0]
  qbzr C:\Program Files\Bazaar\plugins\qbzr [0.20.0dev1]
  rewrite C:\Program Files\Bazaar\plugins\rewrite [0.6.2dev]
  svn C:\Program Files\Bazaar\plugins\svn [1.0.5dev]
  upload C:\Program Files\Bazaar\plugins\upload [1.0.0]
  xmloutput C:\Program Files\Bazaar\plugins\xmloutput [0.8.7.dev]