From 2579bf394175637e44e9696959deac9d3c867c8e Mon Sep 17 00:00:00 2001
From: Yuchen Zeng <zyc@google.com>
Date: Fri, 16 Sep 2016 15:59:13 -0700
Subject: [PATCH] Fix ListServices args

---
 test/cpp/util/grpc_tool.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/test/cpp/util/grpc_tool.cc b/test/cpp/util/grpc_tool.cc
index 89bca5e42cf..25f41912e87 100644
--- a/test/cpp/util/grpc_tool.cc
+++ b/test/cpp/util/grpc_tool.cc
@@ -78,7 +78,7 @@ class GrpcTool {
             GrpcToolOutputCallback callback);
   bool CallMethod(int argc, const char** argv, const CliCredentials& cred,
                   GrpcToolOutputCallback callback);
-  bool ListServices(int argc, const char** argv, CliCredentials cred,
+  bool ListServices(int argc, const char** argv, const CliCredentials& cred,
                     GrpcToolOutputCallback callback);
   // TODO(zyc): implement the following methods
   // bool PrintType(int argc, const char** argv, GrpcToolOutputCallback
@@ -261,7 +261,7 @@ bool GrpcTool::Help(int argc, const char** argv, const CliCredentials& cred,
 }
 
 bool GrpcTool::ListServices(int argc, const char** argv,
-                            const CliCredentials cred,
+                            const CliCredentials& cred,
                             GrpcToolOutputCallback callback) {
   CommandUsage(
       "List services\n"