* Fix an issue when reporting an unknown data object type

diff --git a/NinjaPanel.lua b/NinjaPanel.lua
index c7b6799..b9d7a85 100644
--- a/NinjaPanel.lua
+++ b/NinjaPanel.lua
@@ -137,7 +137,7 @@ function NinjaPanel:ScanForPlugins()
 				changed = true
 			elseif not self.warned[name] then
 				print("Skipping unknown broker object for " .. name .. "(" .. tostring(dataobj.type) .. ")")
-				warned[name] = true
+				self.warned[name] = true
 			end
 		end
 	end