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-rw-r--r--test/cpp/util/grpc_tool_test.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/test/cpp/util/grpc_tool_test.cc b/test/cpp/util/grpc_tool_test.cc
index 1d790c6e0b..edb66b72d8 100644
--- a/test/cpp/util/grpc_tool_test.cc
+++ b/test/cpp/util/grpc_tool_test.cc
@@ -109,7 +109,7 @@ class GrpcToolTest : public ::testing::Test {
void ShutdownServer() { server_->Shutdown(); }
- void ExitWhenError(int argc, const char** argv, const CliCredentials cred,
+ void ExitWhenError(int argc, const char** argv, const CliCredentials& cred,
GrpcToolOutputCallback callback) {
int result = GrpcToolMainLib(argc, argv, cred, callback);
if (result) {