hook_load fix

Because
1) if $result is FALSE $node->title sets to empty value - title become empty on save
2) hook_load returns only additions that merge into node - no need to modify $node object
3) return of $result with only 2 fields (question and new title) is more quick on merge which happens after

please, take a closer look to http://api.drupal.org/api/function/hook_load