Repair broken randomisation in castamir's vault.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@9021 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dploog  on February 9, 2009
PLZNF37N34PQJZ7P74GPEDQSCEJQAQ45SNNZOZQ4J67XEEMHUZOQC
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