Undefined index on checkout page if address is blank

On the checkout page ,if i don't fill out the address i get these errors.This is a patch to fix that.

Notice: Undefined index: commerce_shipping in commerce_shipping_pane_checkout_form_validate() (line 112 of
/backup/artdept/installs/drupal-7.9/sites/all/modules/commerce_shipping/includes/commerce_shipping.checkout_pane.inc).
Notice: Undefined index: commerce_shipping in commerce_shipping_pane_checkout_form_validate() (line 113 of
/backup/artdept/installs/drupal-7.9/sites/all/modules/commerce_shipping/includes/commerce_shipping.checkout_pane.inc).
Notice: Undefined index: shipping_methods in commerce_shipping_pane_checkout_form_validate() (line 120 of
/backup/artdept/installs/drupal-7.9/sites/all/modules/commerce_shipping/includes/commerce_shipping.checkout_pane.inc).
Notice: Undefined index: commerce_shipping in commerce_shipping_pane_checkout_form_submit() (line 144 of
/backup/artdept/installs/drupal-7.9/sites/all/modules/commerce_shipping/includes/commerce_shipping.checkout_pane.inc).
Notice: Undefined index: commerce_shipping in commerce_shipping_pane_checkout_form_submit() (line 145 of
/backup/artdept/installs/drupal-7.9/sites/all/modules/commerce_shipping/includes/commerce_shipping.checkout_pane.inc).