Bug 424239: NPE in Tree.outlineView_child_ofItem

Tree._getItem() can return null if index is not valid, added a null
check. Added null check for handle as well to be on safer side.

Change-Id: I490db70c5a9e075cfb8a1edb4f89ce9745315c39
1 file changed
tree: 47ac1438dda322a95ccce06a9cd8895ebc793e20
  1. bundles/
  2. examples/
  3. features/
  4. local-build/
  5. tests/
  6. .gitignore
  7. CONTRIBUTING
  8. LICENSE
  9. NOTICE
  10. pom.xml
  11. README.md
README.md

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