S10.02-Solution-SmarterSyncing - possible NPE

[gshadows]

S10.02-Solution-SmarterSyncing - "SunshineSyncUtils.java"

Closing cursor without null check just after we assumed that it could be null.
Possible same issue could be in all future solutions. At least in S10.03 solution.

//  COMPLETED (6) If it is empty or we have a null Cursor, sync the weather now!
if (null == cursor || cursor.getCount() == 0) {
    startImmediateSync(context);
}
/* Make sure to close the Cursor to avoid memory leaks! */
cursor.close(); // --> This could cause NPE because we just assumed cursor could be null.