Fix wizard-mode corpse force-feeding leading to crash on game reload if the

force-fed monster skeletonizes the corpse.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@8677 c06c8d41-db1a-0410-9941-cceddc491573

Created by  zelgadis  on January 21, 2009
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