Close the sql.Statement that is bound to the transaction

metadb/server/service.go

@@ -178,7 +178,8 @@ func (s *Service) AddDataset(ctx context.Context, backup tabacco.Backup, ds taba
 	return retryBusy(ctx, func() error {
 		return withTX(ctx, s.db, func(tx *sql.Tx) error {
 			for _, dbAtom := range makeAtoms(backup, ds) {
-				if _, err := s.stmts.get(tx, "insert_atom").Exec(
+				stmt := s.stmts.get(tx, "insert_atom")
+				_, err := stmt.Exec(
 					dbAtom.BackupID,
 					dbAtom.BackupTimestamp,
 					dbAtom.BackupHost,
@@ -188,7 +189,9 @@ func (s *Service) AddDataset(ctx context.Context, backup tabacco.Backup, ds taba
 					dbAtom.AtomName,
 					dbAtom.AtomPath,
 					dbAtom.AtomFullPath,
-				); err != nil {
+				)
+				stmt.Close()
+				if err != nil {
 					return err
 				}
 			}