"Break this series" loses end time of event

[stephenharris]

As reported here: http://wp-event-organiser.com/forums/topic/break-this-series-loses-end-time-of-event/

Ooops! At least its easy to fix: https://github.com/stephenharris/Event-Organiser/blob/1.7.3/event-organiser-calendar.php#L187

(Generally that part of the code needs refactoring - maybe create eo_break_occurrence( $event_id, $occurrence_id )?)