Errors from location fields when Nodewords Extras enabled

When the Nodewords Extras module is enabled the follow errors will show when editing meta tags for a specific object for the first time or if location data was not previously set:

Notice: Undefined index: latitude in nodewords_extra_location_form() (line 563 of nodewords_extra/nodewords_extra.module).
Notice: Undefined index: longitude in nodewords_extra_location_form() (line 574 of nodewords_extra/nodewords_extra.module).