[PATCH 2/3] bench: simplify the `rand` target

* etc/bench.pl.in: There is no need to recompile the bench cases
themselves.
---
 etc/bench.pl.in | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/etc/bench.pl.in b/etc/bench.pl.in
index 2f669091..66e11d30 100755
--- a/etc/bench.pl.in
+++ b/etc/bench.pl.in
@@ -954,9 +954,10 @@ EOF
 bench: main
 \t./main \$(BENCHFLAGS) | tee -a README.md
 
+# Link the bench cases in a different order.
 .PHONY: rand
 rand:
-\t-rm main \$(OBJECTS)
+\t-rm main
 \tmake bench OBJECTS="\$\$(shuf -e \$(OBJECTS) | xargs)"
 EOF
 
-- 
2.27.0