cleaned the code a bit up

middleware/db/db.go

@@ -104,14 +104,13 @@ func logmigrations(version int32, name string, dir string, sql string) {
 
 // SetupMigrator sets up the migrator to migrate the database.
 func SetupMigrator(prefix string, connection *pgx.Conn, migrations fs.FS) (mig *migrate.Migrator, err error) {
-	migfs := &iofsMigratorFS{fsys: migrations}
 	mig, err = migrate.NewMigratorEx(
 		context.TODO(),
 		connection,
 		"version",
 		&migrate.MigratorOptions{
 			DisableTx:  false,
-			MigratorFS: migfs,
+			MigratorFS: &iofsMigratorFS{fsys: migrations},
 		},
 	)
 	if err != nil {