Fixed an issue in the Doha's Secret Orders quest

- Follow-up to bba3e690. Issue caused by an improper fix in commit 46f88c20.
- Fixes bug 8425, special thanks to Ink, Michieru
  http://hercules.ws/board/tracker/issue-8425-dohas-secret-orders-bug-since-the-new-questprogress-command/

Signed-off-by: Haru <haru@dotalux.com>