Merge "Guard NPE when fetching a voicemail that does not exist on the server" into nyc-dev
am: 430ac14

* commit '430ac141837c0f6566d63d2ac2f10bff223d215a':
  Guard NPE when fetching a voicemail that does not exist on the server

Change-Id: Ic39411ae44d17ce925b81b7ec1745702ff382f50