[RFT PATCH 2/7] perf stat: Save unnecessary print_metric() call

[Yushan Wang]

Patch [1] removed the second branch of iostat_run, and changed num to 0
since it is the default behavior. But during iostat_run, default value 1
of num is required to avoid print_metric() call later.

Set num as 1 to avoid redundant print_metric() call that causes
unaligned blank printed.

Fixes: b71f46a6a708 ("perf stat: Remove hard coded shadow metrics")

[1]: https://lore.kernel.org/all/20251111212206.631711-8-irogers@google.com/

Signed-off-by: Yushan Wang <wangyushan12 at huawei.com>
---
 tools/perf/util/stat-shadow.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c
index 9c83f7d96caa..9439baf8002f 100644
--- a/tools/perf/util/stat-shadow.c
+++ b/tools/perf/util/stat-shadow.c
@@ -319,8 +319,10 @@ void perf_stat__print_shadow_stats(struct perf_stat_config *config,
 	void *ctxp = out->ctx;
 	int num = 0;
 
-	if (config->iostat_run)
+	if (config->iostat_run) {
 		iostat_print_metric(config, evsel, out);
+		num = 1;
+	}
 
 	perf_stat__print_shadow_stats_metricgroup(config, evsel, aggr_idx,
 						  &num, NULL, out);
-- 
2.33.0