Fix previous change, so that e.g. kobolds can't wield two-handed weapons

anymore.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@8916 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on February 5, 2009
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