Table 'guestbook' not braketed in 4.6.0 version

In line 322 there's:

$result = db_query("SELECT created FROM guestbook WHERE recipient = '%s' AND created > '%d'",

that should be changed in

$result = db_query("SELECT created FROM {guestbook} WHERE recipient = '%s' AND created > '%d'",

to work correctly with prefixed tables.