Default: Prevent possible nil-crash on invalid book metadata

2016-10-04 19:49:06 +02:00 · 2016-10-04 19:49:06 +02:00 · 1799754a8f
parent 32f7051eb8
commit 1799754a8f
1 changed files with 3 additions and 1 deletions
--- a/mods/default/craftitems.lua
+++ b/mods/default/craftitems.lua
@ -105,7 +105,9 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)

 	elseif fields.book_next or fields.book_prev then
 		local data = minetest.deserialize(stack:get_metadata())
-		if not data.page then return end
+		if not data or not data.page then
+			return
+		end

 		if fields.book_next then
 			data.page = data.page + 1