Add missing empty final attack for tentacled monstrosities.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@10584 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on August 20, 2009
7J3I3LNVMNUGUNZYHSKT24XDAU4HJW2NZRLCTE7BB47VEP7WWC2QC
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