Fixed [1921145] [Tiles] closed gate tiles not updated.

Fixed issue where doors in an L-shape would get the incorrect tile.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@3865 c06c8d41-db1a-0410-9941-cceddc491573

Created by  ennewalker  on March 24, 2008
7Q7PY2DHSCW7Y663XJUTBFZTHXCF6KPIMZV2A6XORBCMMHIJWVGQC
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