add back mis-deleted method string
diff --git a/test/cpp/util/grpc_cli.cc b/test/cpp/util/grpc_cli.cc
index 0e1eab1..8e001cc 100644
--- a/test/cpp/util/grpc_cli.cc
+++ b/test/cpp/util/grpc_cli.cc
@@ -160,6 +160,7 @@
               << std::endl;
   }
   grpc::string server_address(argv[2]);
+  grpc::string method(argv[3]);
 
   if (FLAGS_input_binary_file.empty()) {
     std::cout << "Missing --input_binary_file for serialized request."