* Apparently, the Exchange server can send event changes that have
incomplete data. This is not documented, and the result is very
bad in that an exception is thrown by CP2, and the sync (and
future syncs) is prevented from finishing
* Wrote some defensive code to detect bad events and simply not
add them
* Open a new bug to track trying to determine why the Exchange
server is sending this kind of data.
Bug: 2455341
Change-Id: Ibcfd412382164351c96f368dc043f38c7b481154
b00a660c0a