message: Fixed the warning in the file
  In file tpu_embedding_optimization_parameters_utils.cc removed warning
diff: @@ -44,6 +44,7 @@ string GetOptimizationAlgorithmName(OptimizationAlgorithm alg) {
  case OptimizationAlgorithm::PARAMETERS_NOT_SET:
  return "*** Not set ***";
  }
  + return "*** Not set ***";
  }
  string GetOptimizationAlgorithmFriendlyName(OptimizationAlgorithm alg) {
  @@ -71,6 +72,7 @@ string GetOptimizationAlgorithmFriendlyName(OptimizationAlgorithm alg) {
  case OptimizationAlgorithm::PARAMETERS_NOT_SET:
  return "unknown (not specified)";
  }
  + return "unknown (not specified)";
  }
  // Returns the number of optimization parameter vectors used by the optimization
  @@ -111,6 +113,7 @@ Status GetBaseAuxiliaryParameterCount(OptimizationAlgorithm alg, int* count) {
  case OptimizationAlgorithm::PARAMETERS_NOT_SET:
  return errors::InvalidArgument("No optimization algorithm specified");
  }
  + return errors::InvalidArgument("No optimization algorithm specified");
  }
  Status GetGradientAccumulationSupport(OptimizationAlgorithm alg,
  