Fix "Summon Undead" to summon what it did before its overhaul; I was

going by the monster order in mon-data.h, when I should have been going by the monster order in enum.h.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@6114 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on June 24, 2008
DONTX7OVBXA7UDYK62EZ7Y6RG7HTZDP7G5U3MTWEG6PYQF2S7TGAC
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