Fix about 20 memory leaks reported by Coverity

src/plugins/slurmctld/nonstop/do_work.c

src/plugins/task/affinity/cpuset.c

src/sacct/print.c

src/sacctmgr/account_functions.c

src/sacctmgr/common.c

src/sacctmgr/event_functions.c

src/sacctmgr/file_functions.c

src/sacctmgr/reservation_functions.c

src/sacctmgr/resource_functions.c

src/scontrol/info_job.c

src/slurmd/common/proctrack.c

src/slurmd/slurmstepd/task.c

src/sprio/opts.c

src/squeue/opts.c

src/squeue/sort.c

src/srun/libsrun/srun_job.c