Can not try to use an orb a second time on a portal in the endgame

git-svn-id: http://svn.net-core.org/repos/t-engine4@3312 51575b47-30f0-44d4-a5cc-537603b46e54

game/modules/tome/data/zones/high-peak/grids.lua

@@ -109,9 +109,10 @@ newEntity{ base = "VOID_PORTAL", define_as = "CVOID_PORTAL",
 
 local invocation_close = function(self, who)
 	if not who:hasQuest("high-peak") or who:hasQuest("high-peak"):isEnded() then return end
-	game.logPlayer(who, "#LIGHT_BLUE#You use the orb on the portal, shutting it down easily.")
 	-- Remove the level spot
 	local spot = game.level:pickSpot{type="portal", subtype=self.summon}
+	if not spot then return end
+	game.logPlayer(who, "#LIGHT_BLUE#You use the orb on the portal, shutting it down easily.")
 	for i = 1, #game.level.spots do if game.level.spots[i] == spot then table.remove(game.level.spots, i) break end end
 	local g = game.level.map(spot.x, spot.y, engine.Map.TERRAIN)
 	g.name = g.name .. " (disabled)"