Fix after merge

1 files changed, 2 insertions, 2 deletions

diff --git a/test/cpp/util/grpc_tool.cc b/test/cpp/util/grpc_tool.cc
index 7d51c5f45f..a6d08cd83c 100644
--- a/test/cpp/util/grpc_tool.cc
+++ b/test/cpp/util/grpc_tool.cc
@@ -251,7 +251,7 @@ int GrpcToolMainLib(int argc, const char** argv, const CliCredentials& cred,
       // Force the command to print its usage message
       fprintf(stderr, "\nWrong number of arguments for %s\n", command.c_str());
       grpc_tool.SetPrintCommandMode(1);
-      return cmd->function(&grpc_tool, -1, NULL, cred, callback);
+      return cmd->function(&grpc_tool, -1, nullptr, cred, callback);
     }
     const bool ok = cmd->function(&grpc_tool, argc, argv, cred, callback);
     return ok ? 0 : 1;
@@ -285,7 +285,7 @@ bool GrpcTool::Help(int argc, const char** argv, const CliCredentials& cred,
       Usage("Unknown command '" + grpc::string(argv[0]) + "'");
     }
     SetPrintCommandMode(0);
-    cmd->function(this, -1, NULL, cred, callback);
+    cmd->function(this, -1, nullptr, cred, callback);
   }
   return true;
 }