tree 99b9ae31e00196522165e6b852699002d90451b7
parent d0f989e0073dddf7da7032937f6337b6a770b9ce
author Tom Sepez <tsepez@chromium.org> 1556315903 +0000
committer Chromium commit bot <commit-bot@chromium.org> 1556315903 +0000

Add some stronger checks to TreeNode<>

Self-insertion was not previously detected, nor removal from
null |this| in all cases.

Change-Id: I839d795f0eed1751857bab8432960b9b3f54c372
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/53651
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>