Unsubscribe() on destroy() to avoid leak, fixes #11587 !strict.   Patch from Katie Vance (IBM, CCLA), thanks!   Also combined unsubscribe() and destroy() (getting rid of the unsubscribe() method).
Unsubscribe() on destroy() to avoid leak, fixes #11587 !strict.   Patch from Katie Vance (IBM, CCLA), thanks!   Also combined unsubscribe() and destroy() (getting rid of the unsubscribe() method).

git-svn-id: 674a2d6b1e32e53f607eb824547723f32280967e@22745 560b804f-0ae3-0310-86f3-f6aa0a117693

redaktor/deliteful