Replace hardcoded piety value with piety_breakpoint(0).

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@9783 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on May 16, 2009
2KJ6VEN4TXT3L77WRJJ2ZU2QSJV73YQDPJD4WI7UCMSRXXILXHSAC
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