[1948047] Fixing slime pit minimap bug. Walls that are out-of-sight when the royal jelly dies are not updated until the player sees them again.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@4460 c06c8d41-db1a-0410-9941-cceddc491573

Created by  ennewalker  on April 21, 2008
GL52ELLMGXLBIQL6WZVLUVA3GYZH3L4BZUEYPCRANMCTB753T2UAC
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