Cannot parse multiple unique constraints within a single table correctly

[8fdafs2]

In the beblow case, the two unique constraints might not be constructed correctly in SQL.

type Test struct {
	tableName struct{} `pg:"tests"`

	ID int

	KeyAID int `pg:",unique:g1"`
	KeyBID int `pg:",unique:g1,unique:g2"`
	KeyCID int `pg:",unique:g2"`
}