vppapigen: fix coverity issues in jsonconvert

Type: fix
Signed-off-by: Ole Troan <ot@cisco.com>
Change-Id: I92e03a5a3fcbdab6ce4d178193dceb4450ac0f62
diff --git a/src/vat2/test/vat2_test.api b/src/vat2/test/vat2_test.api
index ff503f0..5896147 100644
--- a/src/vat2/test/vat2_test.api
+++ b/src/vat2/test/vat2_test.api
@@ -77,3 +77,7 @@
   vl_api_test_vlatype3_t data;
 };
 
+/* Addresses */
+autoreply define test_addresses {
+  vl_api_address_t a;
+};