Fix for auctions that allows it to function properly under latest PHP5 and PostGRES 8.0

This patch fixes an error coming from PHP5 about auctions.module line 210 improper arguments to implode.

Delete line 210 it's a SQL statement, that files $paid_for

Replace with the following code.

if(is_array($nids)){
$temp = implode($nids);
$paid_for = db_result(db_query('SELECT COUNT(t.txnid) FROM {ec_transaction_product} tp, {ec_transaction} t WHERE t.payment_status = %d AND t.txnid = tp.txnid AND t.uid = %d AND nid IN (%s)', payment_get_status_id('completed'), $user->uid, $temp));
}else{
$paid_for = NULL;
}