[TableSystem] Fix crash when a NITableViewSystem got deallocated while its TableView had a visible swipe-to-delete button.
[TableSystem] Fix crash when a NITableViewSystem got deallocated while its TableView had a visible swipe-to-delete button.

djMax/nimbus,djMax/nimbus,djMax/nimbus,djMax/nimbus,djMax/nimbus,djMax/nimbus