Prevent crash on DropDown destroy if a parent is disposed

See Bug 408101 - [DropDown] Javascript error when disposing of DropDown 
2 files changed
tree: c4f94e289eddfeb1cd23998bc2b87382008f1dce
  1. bundles/
  2. examples/
  3. features/
  4. releng/
  5. tests/
  6. .gitignore
  7. component.xml