[Bug 18824] Thief 3 crashes when starting a new game

http://bugs.winehq.org/show_bug.cgi?id=18824

--- Comment #19 from Rico   2009-06-08 12:42:36 ---
Created an attachment (id=21653)
 --> (http://bugs.winehq.org/attachment.cgi?id=21653)
Workaround for number of calls to Unmap > Map

This patch adds a check to Unmap to make sure the counter isn't decremented too
much on too many calls to Unmap. This works fine for the thief demo here.

(It doesn't solve the problem with crysis - that was expected - see bug 18799
.)