ls: fix gnu ls-misc.sh test #2466

Job	Run time
Run benchmarks (CodSpeed) (uu_cp)	2m 19s
Run benchmarks (CodSpeed) (uu_expand)	1m 43s
Run benchmarks (CodSpeed) (uu_base64)	8m 4s
Run benchmarks (CodSpeed) (uu_cut)	1m 31s
Run benchmarks (CodSpeed) (uu_cksum)	8m 11s
Run benchmarks (CodSpeed) (uu_ls)	3m 0s
Run benchmarks (CodSpeed) (uu_sort)	5m 23s
Run benchmarks (CodSpeed) (uu_split)	1m 50s
Run benchmarks (CodSpeed) (uu_fold)	1m 11s
Run benchmarks (CodSpeed) (uu_du)	2m 12s
Run benchmarks (CodSpeed) (uu_hashsum)	2m 24s
Run benchmarks (CodSpeed) (uu_nl)	1m 23s
Run benchmarks (CodSpeed) (uu_unexpand)	1m 53s
Run benchmarks (CodSpeed) (uu_uniq)	1m 49s
Run benchmarks (CodSpeed) (uu_shuf)	1m 36s
Run benchmarks (CodSpeed) (uu_factor)	1m 50s
Run benchmarks (CodSpeed) (uu_tsort)	2m 20s
Run benchmarks (CodSpeed) (uu_numfmt)	1m 58s
Run benchmarks (CodSpeed) (uu_rm)	1m 49s
Run benchmarks (CodSpeed) (uu_mv)	2m 15s
Run benchmarks (CodSpeed) (uu_wc)	12m 36s
Run benchmarks (CodSpeed) (uu_seq)	1m 58s
	1h 9m 15s

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