insert_id() always return false

[Jeffrey04]

similar to #767, when insert_id is being requested it always returns to FALSE

however, after applying the fix in #767, there is one more place to fix, in line 456

// from 
$result = pg_query($link, $query);
// to
$result = pg_query($query);

DBMS used: postgresql 8.3

[Shadowhand]

Fixed in r3492, merged in r3493.