tree a2cbcba2c14fb2985a86b8555252da509d8c6cb9
parent 8ee1d64c0ac3dba3e72fcc3503c7c36397a5ac74
author Craig Mautner <cmautner@google.com> 1424803983 -0800
committer Craig Mautner <cmautner@google.com> 1424804838 -0800

Cleanup the activity before the task and stack

The method cleanupActivityLocked() should be called before
removeActivityFromHistoryLocked(). Previously it didn't matter but
now that we null TaskRecord.stack when removing the last activity
from the task it does.

Fixes NPE in bug 19491381.

Change-Id: Ia6f8f560c0fe4df330577f313e24d7dd02c18409