get_recipients now takes a ticket ID, not a ticket

[trac@…]

Email notification is broken without this patch.

Traceback (most recent call last):
  File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/site-packages/trac/ModPythonHandler.py", line 172, in handler
    core.dispatch_request(mpr.path_info, args, mpr, env)
  File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/site-packages/trac/core.py", line 403, in dispatch_request
    module.run()
  File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/site-packages/trac/Module.py", line 45, in run
    self.render()
  File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/site-packages/trac/Ticket.py", line 387, in render
    self.save_changes (id)
  File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/site-packages/trac/Ticket.py", line 322, in save_changes
    tn.notify(ticket, newticket=0, modtime=time.time())
  File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/site-packages/trac/Notify.py", line 223, in notify
    NotifyEmail.notify(self, ticket['id'], subject)
  File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/site-packages/trac/Notify.py", line 127, in notify
    Notify.notify(self, resid)
  File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/site-packages/trac/Notify.py", line 74, in notify
    rcpts = self.get_recipients(resid)
  File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/site-packages/trac/Notify.py", line 270, in get_recipients
    cursor.execute('SELECT reporter,cc FROM ticket WHERE id=%s', ticket['id'])
TypeError: string indices must be integers

[trac@…]

Fix get_recipients to take a ticket ID

[trac@…]

Oops, this is a duplicate of #544.