call to subscriptions_og_form_alter returns empty array in $form['subscription']['params']['#value']

warning: Invalid argument supplied for foreach() in sites/all/modules/subscriptions_og/subscriptions_og.module on line 457.

The following call subscriptions_og_form_alter('subscriptions_ui_node_form', $form['subscription']); fails to provide a non-empty array that is not properly checked for.

This is from a fresh checkout from DRUPAL-5

Received the error at the following url: http://BASEURL/og/subscribe/GID

Not sure if the group settings matter, but here they are;

• moderated - membership requests must be approved.
• registration form - unchecked
• list in groups directory: checked
• private group: unchecked
• New members are subscribed to notifications automatically: unchecked

User only had the following subscription rights and was not a member of group GID

• subscribe to content
• subscribe to organic groups

Please note that the og subscriptions form does not show up at the given URL.

Attached is a patch that prevents the warning, but I'm not sure if this is not just hiding a bigger issue.