par2backend.py incorrect syntax in get()

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Attempting to resume a failed backup using 0.7.02-0ubuntu0ppa1080~ubuntu14.10.1, I encountered the following stack trace:

Backtrace of previous error: Traceback (innermost last):
  File "/usr/lib/python2.7/dist-packages/duplicity/backend.py", line 365, in inner_retry
    return fn(self, *args)
  File "/usr/lib/python2.7/dist-packages/duplicity/backend.py", line 538, in get
    self.backend._get(remote_filename, local_path)
  File "/usr/lib/python2.7/dist-packages/duplicity/backends/par2backend.py", line 120, in get
    par2volumes = filter(re.compile((r'%s\.vol[\d+]*\.par2' % remote_filename).match,
 AttributeError: 'str' object has no attribute 'match'

Attempt 1 failed. AttributeError: 'str' object has no attribute 'match'

It looks like Revision 978.2.2 introduced this error by adding some extraneous brackets. The attached patch appears to resolve the problem here, but I don't write Python, so probably needs at least a desk-check.