Don't compare to blacklisted output when supplied a changetree

Alea is seeded based on the changesIndex so this will always be
different.

Conflict between commits:
d45b1b251b764b0e947878a9f9e7a0f49349ccba
2c43608152abc0eeb6021240410fb9ce4cfbb10f

Change-Id: I100ab91c743494972aa7e9b99601e0aaff9c41db