Merge pull request #238 from ArturoVM/v2

fix upper/db#237

sqlite/tx.go

@@ -33,3 +33,17 @@ type tx struct {
 var (
 	_ = db.Tx(&tx{})
 )
+
+func (t *tx) Commit() error {
+	if sess := t.Session(); sess != nil {
+		defer sess.Close()
+	}
+	return t.DatabaseTx.Commit()
+}
+
+func (t *tx) Rollback() error {
+	if sess := t.Session(); sess != nil {
+		defer sess.Close()
+	}
+	return t.DatabaseTx.Rollback()
+}