In the interest of efficency only call StashTrack.update_corpses()

when absolutelty necessary, rather than whenever the player isn't delayed.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@5493 c06c8d41-db1a-0410-9941-cceddc491573

Created by  zelgadis  on June 5, 2008
IRHLR6SFPTWOEK6ILEG2A3QI4ABFXEURGPQBMKX2FWNB6SN2GXPAC
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