apply_location_effects() should check_pool() with the monster's new location,

not the old one.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@8590 c06c8d41-db1a-0410-9941-cceddc491573

Created by  zelgadis  on January 19, 2009
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