tolerate recoup information not being present

src/lib/exchange_api_handle.c

@@ -1045,9 +1045,10 @@ decode_keys_json (const json_t *resp_obj,
     json_t *recoup_info;
     unsigned int index;
 
-    EXITIF (NULL == (recoup_array =
+    if (NULL != (recoup_array =
                    json_object_get (resp_obj,
-                                        "recoup")));
+                                    "recoup")))
+    {
       EXITIF (JSON_ARRAY != json_typeof (recoup_array));
 
       json_array_foreach (recoup_array, index, recoup_info) {
@@ -1075,6 +1076,7 @@ decode_keys_json (const json_t *resp_obj,
         }
       };
     }
+  }
 
   if (check_sig)
   {