Prevent possible errors on player initialization

lignumis/scripts/init.lua

@@ -22,10 +22,10 @@ end
 -- Teleport to Lignumis and give some starting items
 local function init_player(event)
     local player = game.get_player(event.player_index)
-
-    if not player.character then return end
-
     local surface = storage.surface or game.planets["lignumis"].surface
+
+    if not player.character or not surface then return end
+
     player.teleport(surface.find_non_colliding_position("character", { 0, 0 }, 0, 1), "lignumis")
     player.character.destructible = false
     local main_inventory = player.character.get_main_inventory()