message: Fix scoping error
diff: @@ -346,6 +346,7 @@ StatusOr<std::unique_ptr<Executable>> PoplarCompiler::RunBackend(
  const auto is_constant_graph = GetConstantOutput(
  entry->root_instruction(), comp_layout->shape(), constant_output);
  + std::string map_json;
  std::vector<uint64> remaped_output;
  bool is_remap_graph = false;
  if (is_constant_graph) {
  @@ -375,7 +376,7 @@ StatusOr<std::unique_ptr<Executable>> PoplarCompiler::RunBackend(
  // Generate this JSON early so that the VLOG trace can contain the output
  // whether the engine compilation completes or not
  - std::string map_json = GetTensorMappingJson(graph, resources.tensor_maps);
  + map_json = GetTensorMappingJson(graph, resources.tensor_maps);
  is_remap_graph = AreAllOutputsParameters(
  entry->root_instruction(), visitor.GetNonStandardParameterLayout(),
  