tree cef10292cb66fa740548079987426fc2c85ba08b
parent c09e8fbe9d323d2b1e12e3ac5109c43a7310fd4f
author Jon Miranda <jonmiranda@google.com> 1587160728 -0700
committer Jon Miranda <jonmiranda@google.com> 1587161013 -0700

Fix NPE when closing folder.

There is a race condition where Folder is closing, it unbinds, and then
another call to AbstractFloatingView.closeAllOpenViews tries to close the
Folder again. But since the contents are unbound and removed from the folder,
it produces a NPE.

Bug: 153625271
Change-Id: Ia6c55f15cf7517e26af8f499bc0c1a4828737480