[PATCH v4 2/5] telemetry: fix repeat display when callback don't init dict

[Chengwen Feng]

When a telemetry callback doesn't initialize the telemetry data
structure and returns a non-negative number, the telemetry will repeat
to display the last result. This patch zero the data structure to avoid
the problem.

Fixes: 6dd571fd07c3 ("telemetry: introduce new functionality")
Cc: stable at dpdk.org

Signed-off-by: Chengwen Feng <fengchengwen at huawei.com>
Reviewed-by: Bruce Richardson <bruce.richardson at intel.com>
---
 lib/telemetry/telemetry.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/telemetry/telemetry.c b/lib/telemetry/telemetry.c
index 8fbb4f3060..7b905355cd 100644
--- a/lib/telemetry/telemetry.c
+++ b/lib/telemetry/telemetry.c
@@ -333,7 +333,7 @@ output_json(const char *cmd, const struct rte_tel_data *d, int s)
 static void
 perform_command(telemetry_cb fn, const char *cmd, const char *param, int s)
 {
-	struct rte_tel_data data;
+	struct rte_tel_data data = {0};
 
 	int ret = fn(cmd, param, &data);
 	if (ret < 0) {
-- 
2.17.1