message: Fix unused variable issue with fuzzing methods
diff: @@ -54,9 +54,10 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  }
  }
  - sg.as_summary_status();
  - sg.as_concatenated_status();
  - sg.AttachLogMessages();
  + // Ignore warnings that these values are unused
  + sg.as_summary_status().IgnoreError();;
  + sg.as_concatenated_status().IgnoreError();;
  + sg.AttachLogMessages().IgnoreError();;
  return 0;
  }
  