If there's no matching culprit hashes in the cache, add the current culprit to the cache.
If there's no matching culprit hashes in the cache, add the current culprit to the cache.

With previous logic, nothing was getting added to the cache. Now we add the current culprit CL to the cache if it doesn't exist.

Bug: chromium:1333593
Change-Id: I3b95e4db0e115a6e56bc516d779b914a1d6bdfef
Reviewed-on: https://chromium-review.googlesource.com/c/catapult/+/3758890
Commit-Queue: Eduardo Yap <12e93f4ac6713653f870b670813c82ff14c0d1e1@google.com>
Reviewed-by: Ryan Heise <50ee0a56d43e9e15503d071e9ceb1a6059353025@google.com>

catapult-project/catapult,catapult-project/catapult,catapult-project/catapult,catapult-project/catapult,catapult-project/catapult,catapult-project/catapult,catapult-project/catapult