Ensure the litestream initializer handles nils

Author: fractaledmind

lib/litestream/generators/litestream/templates/initializer.rb

@@ -19,15 +19,15 @@
   # any SFTP server.
   # In this example, we are using Rails encrypted credentials to store the URL to
   # our storage provider bucket.
-  # config.litestream.replica_bucket = litestream_credentials.replica_bucket
+  # config.litestream.replica_bucket = litestream_credentials&.replica_bucket
 
   # Replica-specific authentication key.
   # Litestream needs authentication credentials to access your storage provider bucket.
   # In this example, we are using Rails encrypted credentials to store the access key ID.
-  # config.litestream.replica_key_id = litestream_credentials.replica_key_id
+  # config.litestream.replica_key_id = litestream_credentials&.replica_key_id
 
   # Replica-specific secret key.
   # Litestream needs authentication credentials to access your storage provider bucket.
   # In this example, we are using Rails encrypted credentials to store the secret access key.
-  # config.litestream.replica_access_key = litestream_credentials.replica_access_key
+  # config.litestream.replica_access_key = litestream_credentials&.replica_access_key
 end