tree ca34162abb9080fa1339f03a7542ff3d9273a4b3
parent 2fbf90c6ae01c7dab2caab33cfc1005ab0874c30
author Michael Wright <michaelwr@google.com> 1552308862 +0000
committer Michael Wright <michaelwr@google.com> 1552310034 +0000

Protect against null Displays.

Because the display callbacks happen asynchronously, if a display is
added or changed and then immediately removed it may no longer exist by
the time we query DisplayManager about it. This results in an unexpected
null Display object, causing DisplayModeDirector to crash. We guard
against this case, ignoring the display until it gets re-attached.

Fixes: 127875518
Test: manual
Change-Id: I32acd77a095181155dbcb57922f616b2ac57192c