Fix NPE in MediaUpgradeReceiver

The NPE occurred on first boot or after data wipe when the
/data/data/com.android/providers.media/databases/ directory does not exist yet.

Change-Id: I1a1cb5127216f291308642b4c6078f8387a4831d
Bug: 5214301

Signed-off-by: Mike Lockwood <lockwood@android.com>
1 file changed