Fix generation of static error pages in glitch-soc

lib/tasks/assets.rake

@@ -1,27 +1,13 @@
 # frozen_string_literal: true
 
+def render_static_page(action, dest:, **opts)
+  html = ApplicationController.render(action, opts)
+  File.write(dest, html)
+end
+
 namespace :assets do
   desc 'Generate static pages'
   task generate_static_pages: :environment do
-    def render_static_page(action, dest:, **opts)
-      renderer = Class.new(ApplicationController) do
-        def current_user
-          nil
-        end
-
-        def current_flavour
-          Setting.default_settings['flavour']
-        end
-
-        def current_skin
-          Setting.default_settings['skin']
-        end
-      end
-
-      html = renderer.render(action, opts)
-      File.write(dest, html)
-    end
-
     render_static_page 'errors/500', layout: 'error', dest: Rails.public_path.join('assets', '500.html')
   end
 end