Attempt to fix [1850593] by reverting r3020, as getch_ck() acts

differently under Windows and Unix-line systems.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@3063 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on December 14, 2007
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