Fix crash related to viewing ruin planets

Author: Quezler

mods/glutenfree-se-tinted-pyramids/info.json

@@ -3,7 +3,7 @@
     "title": "Space Exploration - tinted pyramids",
     "description": "Tints unlooted pyramids in the color of the module.",
     "category": "cheats",
-    "version": "1.0.15",
+    "version": "1.0.16",
     "author": "Quezler",
     "factorio_version": "1.1",
     "dependencies": [

mods/glutenfree-se-tinted-pyramids/scripts/handler.lua

@@ -111,6 +111,10 @@ function Handler.on_post_surface_created(event)
   if zone.type ~= "planet" then return end
   if zone.is_homeworld then return end
 
+  -- https://mods.factorio.com/mod/glutenfree-se-tinted-pyramids/discussion/65555c2f0106094c6fc67b8f
+  -- TODO: why does this only crash on the "large" planetside ruin and not the "smaller" one?
+  if not zone.glyph then return game.print(zone.name .. ' has no glyph?') end
+
   -- if the module is taken, return the tint to the default :)
   local inside_surface_name = Ancient.vault_surface_name(zone)
   local inside_surface = game.get_surface(inside_surface_name)