Bug 804394 - [Clock] if more than one alarm is set and goes off and the screen lock is placed, only the top alarm is disabled.
Merge pull request #7370 from ian-liu/clock/Bug804394_handle_previous_alarm_when_next_alarm_goes_off

Bug 804394 - [Clock] if more than one alarm is set and goes off and the screen lock is placed, only the top alarm is disabled.