Fixed: - $object_data['actor'] can be null, but Receiver::getReceivers()'s 2nd   parameter expect it to be string
Fixed:
- $object_data['actor'] can be null, but Receiver::getReceivers()'s 2nd
  parameter expect it to be string

friendica/friendica,annando/friendica,friendica/friendica,annando/friendica,annando/friendica,friendica/friendica,friendica/friendica,annando/friendica,annando/friendica,friendica/friendica