Fix sidekiq initializer (#1236)

Fixes what I broke in https://github.com/octobox/octobox/pull/1234

config/initializers/sidekiq.rb

@@ -14,10 +14,10 @@ if Octobox.background_jobs_enabled?
     end
     Sidekiq::Status.configure_server_middleware config, expiration: 60.minutes
     Sidekiq::Status.configure_client_middleware config, expiration: 60.minutes
-  end
 
-  config.death_handlers << ->(job, _ex) do
-    SidekiqUniqueJobs::Digests.del(digest: job['unique_digest']) if job['unique_digest']
+    config.death_handlers << ->(job, _ex) do
+      SidekiqUniqueJobs::Digests.del(digest: job['unique_digest']) if job['unique_digest']
+    end
   end
 
   Sidekiq.configure_client do |config|