Carts: Fix the rail table overwrite behaviour

diff --git a/mods/carts/functions.lua b/mods/carts/functions.lua
index 285645cb87892dd303efdc9d290e7a7553aa6c32..a47171948a8dbabedca691e005a9eee2dfc4db32 100644 (file)
--- a/mods/carts/functions.lua
+++ b/mods/carts/functions.lua
@@ -181,8 +181,8 @@ function carts:pathfinder(pos_, old_pos, old_dir, ctrl, pf_switch, railtype)
        return false
 end
 
-function carts:register_rail(name, def, railparams)
-       local def_default = {
+function carts:register_rail(name, def_overwrite, railparams)
+       local def = {
                drawtype = "raillike",
                paramtype = "light",
                sunlight_propagates = true,
@@ -194,7 +194,7 @@ function carts:register_rail(name, def, railparams)
                },
                sounds = default.node_sound_metal_defaults()
        }
-       for k, v in pairs(def_default) do
+       for k, v in pairs(def_overwrite) do
                def[k] = v
        end
        if not def.inventory_image then