fix: warning quickloot Old protocol (#858)

Author: kokekanon

modules/game_quickloot/quickloot.lua

@@ -61,6 +61,9 @@ function quickLootController:onGameStart()
 end
 
 function quickLootController:onGameEnd()
+    if not g_game.getFeature(GameThingQuickLoot) then
+        return
+    end
     QuickLoot.save()
     QuickLoot.toggle()
     if quickLootController.ui:isVisible() then
@@ -177,7 +180,7 @@ function QuickLoot.Define()
         end)
 
         if not status then
-            return g_logger.error("Error while saving top bar settings. Data won't be saved. Details: " .. result)
+            return g_logger.warning("Error while saving QuickLoot settings. Data won't be saved. Details: " .. result)
         end
 
         if result:len() > 104857600 then