Allow zero maxBlacklistSize

To prevent too many Log.wtf() logs in DropBoxLogs.txt in cast of
zero maxBlacklistSize.

Bug: 134726626
Test: Compiles
Change-Id: I31f702ec7967917f09e558422633898361cd0e00
(cherry-picked from 4f009a02576221d1d4ba442f3b7c94d8b1fe120f)
1 file changed
tree: 5a6e514bb91de8b71c473ae8747fd5c5b05765b7
  1. service/
  2. PREUPLOAD.cfg