rcuscale: Avoid divide by zero

The rcuscale test module does not use batches, so there is only
ever one batch.  This commit therefore informs the kvm-recheck-rcuscale.sh
script of this fact of life.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Paul E. McKenney 2020-09-09 22:24:57 -07:00
commit 45c7b96201