Fix duplicated error when Scan, close #4525
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				| @ -454,9 +454,7 @@ func (db *DB) Scan(dest interface{}) (tx *DB) { | ||||
| 	tx = db.getInstance() | ||||
| 	tx.Config = &config | ||||
| 
 | ||||
| 	if rows, err := tx.Rows(); err != nil { | ||||
| 		tx.AddError(err) | ||||
| 	} else { | ||||
| 	if rows, err := tx.Rows(); err == nil { | ||||
| 		defer rows.Close() | ||||
| 		if rows.Next() { | ||||
| 			tx.ScanRows(rows, dest) | ||||
|  | ||||
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