Losing ActiveMQ connection spams the logs

Steps to reproduce:
1. Start Opencast
2. Kill ActiveMQ
3.

Actual Results:
Error messages that look like 2017-08-22 15:45:07,610 | ERROR | (ConductingSeriesUpdatedEventHandler$MessageWatcher:123) - Problem while getting series update message events java.lang.NullPointerException
at org.opencastproject.event.handler.ConductingSeriesUpdatedEventHandler$MessageWatcher.run(ConductingSeriesUpdatedEventHandler.java:101)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
appearing every 100th of a second or so

Expected Results:
Less log spam

Workaround (if any):