fake_fire: add moreblocks crafting option to {stone,sandstone} chimney

fake_fire/init.lua

@@ -178,6 +178,11 @@ for _, m in ipairs(materials) do
 		output = 'fake_fire:chimney_top_'..m,
 		recipe = {"default:torch", "stairs:slab_"..m}
 	})
+	minetest.register_craft({
+		type = "shapeless",
+		output = 'fake_fire:chimney_top_'..m,
+		recipe = {"default:torch", "moreblocks:slab_"..m}
+	})
 end
 
 -- FLINT and STEEL