--- a/clear_cmd.c	Wed Oct 19 08:34:37 2005 +0000
+++ b/clear_cmd.c	Wed Oct 19 14:49:46 2005 +0000
@@ -549,7 +549,7 @@
 	DrawClearLandFence(ti);
 }
 
-static uint GetSlopeZ_Clear(TileInfo *ti)
+static uint GetSlopeZ_Clear(const TileInfo* ti)
 {
 	return GetPartialZ(ti->x & 0xF, ti->y & 0xF, ti->tileh) + ti->z;
 }