*: modify empty json helper function

Modify empty json object to take input obj
instead of allocating always one.

There are situation where in error condition or no data
case print empty json (`{}`) with already allocated

Signed-off-by: Chirag Shah <chirag@nvidia.com>

1 files changed, 6 insertions, 3 deletions

diff --git a/lib/vty.c b/lib/vty.c
index d6a0dba206..c0d396ebdc 100644
--- a/lib/vty.c
+++ b/lib/vty.c
@@ -343,11 +343,14 @@ int vty_json_no_pretty(struct vty *vty, struct json_object *json)
 	return vty_json_helper(vty, json, JSON_C_TO_STRING_NOSLASHESCAPE);
 }
 
-void vty_json_empty(struct vty *vty)
+void vty_json_empty(struct vty *vty, struct json_object *json)
 {
-	json_object *json = json_object_new_object();
+	json_object *jsonobj = json;
 
-	vty_json(vty, json);
+	if (!json)
+		jsonobj = json_object_new_object();
+
+	vty_json(vty, jsonobj);
 }
 
 /* Output current time to the vty. */