message: deflake a test
diff: @@ -474,11 +474,11 @@ TEST_P(InjectDataWithEchoFilterIntegrationTest, FilterChainMismatch) {
  auto tcp_client = makeTcpConnection(lookupPort("listener_0"));
  tcp_client->write("hello");
  - tcp_client->close();
  std::string access_log =
  absl::StrCat("NR ", StreamInfo::ResponseCodeDetails::get().FilterChainNotFound);
  EXPECT_THAT(waitForAccessLog(listener_access_log_name_), testing::HasSubstr(access_log));
  + tcp_client->close();
  }
  /**
  