am e2a3fb8c: Fix lookup query throwing exception for null displayNames.

Merge commit 'e2a3fb8c60d68aaef5f20587e5c9cb3f6f3ffa22' into eclair-plus-aosp

* commit 'e2a3fb8c60d68aaef5f20587e5c9cb3f6f3ffa22':
  Fix lookup query throwing exception for null displayNames.