Fix crash with nil fuel

diff --git a/mods/default/nodes.lua b/mods/default/nodes.lua
index 34b873e521da52ee623019dfb1383a0c4e0417c9..cc0f1ac861b70cad5e7952810b12fc3a81970d55 100644 (file)
--- a/mods/default/nodes.lua
+++ b/mods/default/nodes.lua
@@ -1042,7 +1042,7 @@ minetest.register_abm({
                        fuel, afterfuel = minetest.get_craft_result({method = "fuel", width = 1, items = fuellist})
                end
 
-               if fuel.time <= 0 then
+               if not fuel or fuel.time <= 0 then
                        meta:set_string("infotext","Furnace out of fuel")
                        swap_node(pos,"default:furnace")
                        meta:set_string("formspec", default.furnace_inactive_formspec)