Fix job query filter in walltime check

        if (state == JOB_READY and

                "delta" in self.app.job_config.limits.total_walltime):

            jobs_to_check = self.sa_session.query(model.Job).filter(

                model.Job.user_id == job.user.id,

                model.Job.update_time >= datetime.datetime.now() -

                datetime.timedelta(

                    self.app.job_config.limits.total_walltime["window"]

                ),

                model.Job.update_time >= datetime.datetime.now() - datetime.timedelta(self.app.job_config.limits.total_walltime["window"]),

                model.Job.state == 'ok'

            ).all()

            )

            if job.user_id:

                jobs_to_check = jobs_to_check.filter(model.Job.user_id == job.user_id)

            else:

                jobs_to_check = jobs_to_check.filter(model.Job.session_id == job.session_id)

            time_spent = datetime.timedelta(0)

            for job in jobs_to_check:

                # History is job.state_history