Handle None erturned by self.parent.principalForRecord(relative) in _getRelatives(). Log it as an error, but don't add None to the relatives list.
Handle None erturned by self.parent.principalForRecord(relative) in _getRelatives().
Log it as an error, but don't add None to the relatives list.


git-svn-id: 0c33e958600270102f91bf5868e396345dde476c@1927 e27351fd-9f3e-4f54-a53b-843176b1656c

red-hood/calendarserver,red-hood/calendarserver,red-hood/calendarserver,red-hood/calendarserver,red-hood/calendarserver,red-hood/calendarserver