Fixed enumerator chooser hold on to an callback object and do not release it at the end. Tracker item 2610, https://tracker.physiomeproject.org/show_bug.cgi?id=2610
Fixed enumerator chooser hold on to an callback object and do not release it at the end. Tracker item 2610, https://tracker.physiomeproject.org/show_bug.cgi?id=2610

git-svn-id: 4705079bc6b8aadf675e3696f5c015a6aa4916e3@7926 3c1deb5b-d424-0410-962d-aba41a686d42

hsorby/zinc,OpenCMISS/zinc,hsorby/zinc,OpenCMISS/zinc,OpenCMISS/zinc,OpenCMISS/zinc,hsorby/zinc,hsorby/zinc