message: embedding_lookup_sparse divide by zero fixed
diff: @@ -521,13 +521,13 @@ def embedding_lookup_sparse(params,
  elif combiner == "mean":
  embeddings = math_ops.segment_sum(embeddings, segment_ids)
  weight_sum = math_ops.segment_sum(weights, segment_ids)
  - embeddings = math_ops.divide(embeddings, weight_sum, name=name)
  + embeddings = math_ops.div_no_nan(embeddings, weight_sum, name=name)
  elif combiner == "sqrtn":
  embeddings = math_ops.segment_sum(embeddings, segment_ids)
  weights_squared = math_ops.pow(weights, 2)
  weight_sum = math_ops.segment_sum(weights_squared, segment_ids)
  weight_sum_sqrt = math_ops.sqrt(weight_sum)
  - embeddings = math_ops.divide(embeddings, weight_sum_sqrt, name=name)
  + embeddings = math_ops.div_no_nan(embeddings, weight_sum_sqrt, name=name)
  else:
  assert False, "Unrecognized combiner"
  else:
  