util: cast to use empty function json_object_array_add parameter k

This is to prevent the build warning without json.

Signed-off-by: Tokunori Ikegami <ikegami.t@gmail.com>

diff --git a/util/json.h b/util/json.h
index a014803d715edf6fee12f19fabfb4efdb88e1fd4..8a974adddace49c29ca3aeb1570d3c7e225c9e84 100644 (file)
--- a/util/json.h
+++ b/util/json.h
@@ -67,5 +67,6 @@ struct json_object;
 #define json_object_add_value_object(o, k, v) ((void)(v))
 #define json_array_add_value_object(o, k) ((void)(k))
 #define json_print_object(o, u) ((void)(o))
+#define json_object_array_add(o, k) ((void)(k))
 #endif /* CONFIG_JSONC */
 #endif /* __JSON__H */