#1997274 Return docs for og_get_entity_groups() unclear.

og.module

@@ -2305,9 +2305,9 @@ function og_user_access_entity($perm, $entity_type, $entity, $account = NULL, $s
  *   (optional) The field name associated with the group.
  *
  * @return
- *  An array with the group's entity type as the key, and array - keyed by
- *  the OG membership ID and the group ID as the value. If nothing found,
- *  then an empty array.
+ *   An associative array keyed by the group's entity type. Each value is itself
+ *   an array, where each item has for its key the OG membership ID and for its
+ *   value the group ID.
  */
 function og_get_entity_groups($entity_type = 'user', $entity = NULL, $states = array(OG_STATE_ACTIVE), $field_name = NULL) {
   $cache = &drupal_static(__FUNCTION__, array());