Consistent reporting of failure conditions

Querying for the state of the exact-alarm permission produced
inconsistent results depending on circumstances.  This is now fixed so
the failure reporting is invariant.

Bug: 193032972
Test: manual
Test: atest CtsAlarmManagerTestCases
Change-Id: Ie1cc126cec568b6f53ebe6049e57ed13abdfd5bb
1 file changed