Johan Wikman d3f4723c81 Do not report events for closed dcb
Before each event handler is called, it is checked whether the
dcb has been closed. If it has been, then the event handler is
not called.

The check has to be made before each event handler, because any
event handler can close the dcb.
2017-09-05 13:20:22 +03:00
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2017-09-05 13:20:22 +03:00
2017-01-16 10:56:33 +02:00