Fix bug rotating unknown node

This fixes a bug what crashes game when rotating an unknown node.

diff --git a/mods/screwdriver/init.lua b/mods/screwdriver/init.lua
index 34b4b4a8f2ece8a1a2fc25f3c0ce853c34457c06..6b82d0428e6bdc8631032ee5c26107f2497637b1 100644 (file)
--- a/mods/screwdriver/init.lua
+++ b/mods/screwdriver/init.lua
@@ -36,7 +36,7 @@ local function screwdriver_handler(itemstack, user, pointed_thing, mode)
        local node = minetest.get_node(pos)
        local ndef = minetest.registered_nodes[node.name]
        -- verify node is facedir (expected to be rotatable)
-       if ndef.paramtype2 ~= "facedir" then
+       if not ndef or ndef.paramtype2 ~= "facedir" then
                return
        end
        -- Compute param2