email notification failure

[Matthew Good]

Email notification is producing an exception:

Traceback (most recent call last):
  File "e:\trac-0.9\Lib\site-packages\trac\ticket\web_ui.py", line 113, in _do_create
    tn.notify(ticket, newticket=True)
  File "e:\trac-0.9\Lib\site-packages\trac\Notify.py", line 218, in notify
    NotifyEmail.notify(self, ticket.id, subject)
  File "e:\trac-0.9\Lib\site-packages\trac\Notify.py", line 118, in notify
    Notify.notify(self, resid)
  File "e:\trac-0.9\Lib\site-packages\trac\Notify.py", line 57, in notify
    self.send(to)
  File "e:\trac-0.9\Lib\site-packages\trac\Notify.py", line 336, in send
    NotifyEmail.send(self, rcpt, hdrs)
  File "e:\trac-0.9\Lib\site-packages\trac\Notify.py", line 151, in send
    self.server.sendmail(self.from_email, rcpt, msg.as_string())
  File "E:\Python23\Lib\email\Message.py", line 130, in as_string
    g.flatten(self, unixfrom=unixfrom)
  File "E:\Python23\Lib\email\Generator.py", line 102, in flatten
    self._write(msg)
  File "E:\Python23\Lib\email\Generator.py", line 137, in _write
    self._write_headers(msg)
  File "E:\Python23\Lib\email\Generator.py", line 183, in _write_headers
    header_name=h, continuation_ws='\t').encode()
  File "E:\Python23\Lib\email\Header.py", line 412, in encode
    newchunks += self._split(s, charset, targetlen, splitchars)
  File "E:\Python23\Lib\email\Header.py", line 297, in _split
    elen = charset.encoded_header_len(encoded)
  File "E:\Python23\Lib\email\Charset.py", line 341, in encoded_header_len
    return len(s)
TypeError: len() of unsized object

[Matthew Good]

Fixed in [1855]