use new way for stat

service/launcher.lua

@@ -21,11 +21,7 @@ function command.STAT()
 	local list = {}
 	for k,v in pairs(services) do
 		local stat = skynet.call(k,"debug","STAT")
-		local result = {}
-		for k,v in pairs(stat) do
-			table.insert(result, string.format("%s = %s", k, tostring(v)))
-		end
-		list[skynet.address(k)] = table.concat(result,",") .. " (" .. v .. ")"
+		list[skynet.address(k)] = stat
 	end
 	skynet.ret(skynet.pack(list))
 end