Prevent unneeded message if Xom flips you from piety == 100 to piety = 100

[2450763].

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@8345 c06c8d41-db1a-0410-9941-cceddc491573

Created by  haranp  on January 8, 2009
7WSQG3B2JCG5IV2UXMDFA6PAWJSAXLCOWAM2AP232VKCQTDUIVFQC
Change contents