Fix assertion when healing a monster as a non-Elyvilonite (oops).

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@9645 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on April 18, 2009
RBBIULEHZVKNU37XCCA2AG3NAHKFCC22SYIEZUDM6V6E75OZN2WQC
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