Make sure the DisplayImpl is terminated if it fails to fully initialize. It is possible that if device creation fails that the display would be left in a state where rx::DisplayImpl is initialized and egl::Display is not. BUG=angleproject:2546 Change-Id: I609e4c40f37945322d64786d4f6e97f361764b62 Reviewed-on: https://chromium-review.googlesource.com/1066501 Commit-Queue: Geoff Lang <geofflang@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>