ensuing that authorization.basic.param will be output as empty string

src/libmerc/http_auth.hpp

@@ -127,7 +127,7 @@ class authorization {
             bearer_token{auth_param}.write_json(scheme_json);
 
         } else {
-            scheme_json.print_key_json_string("param", auth_param);
+            scheme_json.print_key_json_string("param", auth_param.data, auth_param.length());
         }
         scheme_json.close();
         auth_json.close();