dpush can't handle merges

[Luke-Jr]

This happens after I resolve "diverged" branches with 'bzr merge' and 'bzr commit'.

$ bzr dpush svn+https://svn.corp.com/svn/project
The svn+ syntax is deprecated, use https://svn.corp.com/svn/project instead.
bzr: ERROR: exceptions.TypeError: 'NoneType' object is not iterable

Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 893, in run_bzr_catch_errors
    return run_bzr(argv)
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 839, in run_bzr
    ret = run(*run_argv)
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 539, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "//usr/lib/python2.5/site-packages/bzrlib/plugins/svn/foreign/__init__.py", line 122, in run
    revid_map = target_branch.dpull(source_branch)
  File "/usr/lib/python2.5/site-packages/bzrlib/decorators.py", line 192, in write_locked
    result = unbound(self, *args, **kwargs)
  File "//usr/lib/python2.5/site-packages/bzrlib/plugins/svn/branch.py", line 393, in dpull
    return dpush(self, source, stop_revision)
  File "//usr/lib/python2.5/site-packages/bzrlib/plugins/svn/commit.py", line 1001, in dpush
    for revid in todo:
TypeError: 'NoneType' object is not iterable

bzr 1.11 on python 2.5.2 (linux2)
arguments: ['/usr/bin/bzr', 'dpush', 'svn+https://svn.corp.com/svn/project']
encoding: 'ANSI_X3.4-1968', fsenc: 'ANSI_X3.4-1968', lang: None
plugins:
  launchpad /usr/lib/python2.5/site-packages/bzrlib/plugins/launchpad [unknown]
  netrc_credential_store /usr/lib/python2.5/site-packages/bzrlib/plugins/netrc_credential_store [unknown]
  svn /usr/lib/python2.5/site-packages/bzrlib/plugins/svn [0.5]
*** Bazaar has encountered an internal error.
    Please report a bug at https://bugs.launchpad.net/bzr/+filebug
    including this traceback, and a description of what you
    were doing when the error occurred.