Fixed unlock dialog popup, it will appear again (it was only a display bug, unlocks were saved)

git-svn-id: http://svn.net-core.org/repos/t-engine4@4029 51575b47-30f0-44d4-a5cc-537603b46e54

game/modules/tome/class/Game.lua

@@ -1522,10 +1522,10 @@ function _M:setAllowedBuild(what, notify)
 	-- Do not unlock things in easy mode
 	--if self.difficulty == self.DIFFICULTY_EASY then return end
 
+	local old = profile.mod.allow_build[what]
 	profile:saveModuleProfile("allow_build", {name=what})
 
-	if profile.mod.allow_build[what] then return end
-	profile.mod.allow_build[what] = true
+	if old then return end
 
 	if notify then
 		self.state:checkDonation() -- They gained someting nice, they could be more receptive