[Bugs] #2585 UNSP: save fails with None buddy reference

[Sugar Labs Bugs]

#2585: save fails with None buddy reference
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    Reporter:  walter                     |          Owner:  erikos                     
        Type:  defect                     |         Status:  new                        
    Priority:  Unspecified by Maintainer  |      Milestone:  Unspecified by Release Team
   Component:  sugar-toolkit              |        Version:  0.90.x                     
    Severity:  Unspecified                |       Keywords:                             
Status_field:  Unconfirmed                |   Distribution:  Unspecified                
   Seeta_dev:                             |  
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Comment(by walter):

 I confirmed that there was a buddy.props.key with value None.

 Adding a simple test for None seems to remedy the problem but doesn't
 necessarily address the root cause:

                     if buddy.props.key is not None:
                         buddy_id = sha1(buddy.props.key).hexdigest()
                         buddies[buddy_id] = [buddy.props.nick,
 buddy.props.color]

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Ticket URL: <http://bugs.sugarlabs.org/ticket/2585#comment:2>
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