Fixed bad detect items behaviour on pre-mapped squares (Iaido).

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@2982 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dshaligram  on December 2, 2007
4RRUNGCGJO7KZISXL62B3NXZ354DH3VHSI7TDTIHGH5NDEJHHLQQC
Change contents