Gracefully report an error rather than NPEing if an event is posted to an object that no longer has an omgr reference (has been destroyed).
Gracefully report an error rather than NPEing if an event is posted to an
object that no longer has an omgr reference (has been destroyed).


git-svn-id: a1a4b28b82a3276cc491891159dd9963a0a72fae@1716 542714f4-19e9-0310-aa3c-eee0fc999fb1

threerings/narya,threerings/narya,threerings/narya,threerings/narya,threerings/narya