Fix condition to print warning "worker did less than x iterations"

src/openmp_memset.c

@@ -287,7 +287,7 @@ static double memset_run_kernel(enum bench_type bench_type)
     {
 	for (int i = 0; i < nb_threads; i++)
 	{
-	    if (nb_iter_per_thread[i] <= NB_ITER)
+	    if (nb_iter_per_thread[i] < NB_ITER)
 	    {
 		fprintf(stderr, "# Warning: thread %d did less than %d iterations (%u).\n", i, NB_ITER, nb_iter_per_thread[i]);
 	    }