Beds: Do not crash when placing in an unknown node

SmallJoker · SmallJoker · commit 67c01a44c2a3 · 2017-08-10T10:08:24.000+02:00
diff --git a/mods/beds/api.lua b/mods/beds/api.lua
@@ -55,7 +55,7 @@ function beds.register_bed(name, def)
 			end
 
 			local pos
-			if minetest.registered_items[minetest.get_node(under).name].buildable_to then
+			if udef and udef.buildable_to then
 				pos = under
 			else
 				pos = pointed_thing.above
