commit 8fbcb7630a9ea29726274f474d4b7d0694d139f8
author Akira Oshimi <akira.x.oshimi@sonymobile.com> Thu Sep 29 12:17:24 2016 +0900
committer Yoshinori Hirano <Yoshinori.Hirano@sonymobile.com> Thu Nov 10 09:09:25 2016 +0000
tree b401af695e90ae08ffc1f7f77c0d9d0b901a1e32
parent 836e74052e16f4c24c3e7e9eab0dbcaee462986f

Add null check before finish SystemUI Tuner's activity

SystemUI Tuner's activity changes to null when Multi-window's state is
changed after confirmation dialog about removing SystemUI Tuner is
shown. Then NullPointerException occurs by trying to finish the
activity to tap "REMOVE" button on the confirmation dialog.
So add null check before finish the activity.

Bug: 32786029
Test: manual - remove System UI Tuner on Multi-Window mode

Change-Id: I455d17c0c600eeb05c9dfb7d609d40307de2f855