Revert "perf bench: Fix two memory leaks detected with ASan"

This: This reverts commit 92723ea0.

  # perf test 91
  91: perf stat --bpf-counters test           :RRRRRRRRRRRRR FAILED!
  # perf test 91
  91: perf stat --bpf-counters test           :RRRRRRRRRRRRR FAILED!
  # perf test 91
  91: perf stat --bpf-counters test           :RRRRRRRRRRRR FAILED!
  # perf test 91
  91: perf stat --bpf-counters test           :RRRRRRRRRRRRRRRRRR Ok
  # perf test 91
  91: perf stat --bpf-counters test           :RRRRRRRRR FAILED!
  # perf test 91
  91: perf stat --bpf-counters test           :RRRRRRRRRRR Ok
  # perf test 91
  91: perf stat --bpf-counters test           :RRRRRRRRRRRRRRR Ok

yep, it seems the perf bench is broken so the counts won't correlated if
I revert this one:

  92723ea0

 perf bench: Fix two memory leaks detected with ASan

it works for me again.. it seems to break -t option

   [root@dell-r440-01 perf]# ./perf bench sched messaging -g 1 -l 100 -t
   # Running 'sched/messaging' benchmark:
   RRRperf: CLIENT: ready write: Bad file descriptor
   Rperf: SENDER: write: Bad file descriptor

Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Sohaib Mohamed <sohaib.amhmd@gmail.com>
Cc: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/lkml/YZev7KClb%2Fud43Lc@krava/


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>