Fix sprio regression not handling comma separated list of jobids

sprio was unable to parse a comma-separated list of jobs despite
documentation stating that this was possible. The entire job list was
passed to the unfmt_job_id_string() function, but this function is
unable to parse job lists. Switching to only pass the single job to
unfmt_job_id_string() fixes this issue.

Regression introduced in 4f21612.

Changelog: Fix sprio regression not handling comma separated list of
 jobids.
Ticket: 24625

Author: Benjamin Witham

src/sprio/opts.c

@@ -466,7 +466,7 @@ static list_t *_build_job_list(char *str)
 	job = strtok_r(my_job_list, ",", &tmp_char);
 	while (job) {
 		slurm_selected_step_t sel_step;
-		if (unfmt_job_id_string(str, &sel_step, NO_VAL)) {
+		if (unfmt_job_id_string(job, &sel_step, NO_VAL)) {
 			error("Invalid job id: %s", job);
 			exit(1);
 		} else if (sel_step.het_job_offset != NO_VAL)