message: micro: FILL test: fix lifetime of registration object
  Fix a bug caught by ASan.
  Don't pass a reference to a temporary TfLiteRegistration object
  to the runner. Save the registration object.
diff: @@ -38,7 +38,8 @@ void TestFill(int* dims_shape, DimsType* dims_data, int* value_shape,
  constexpr int output_index = 2;
  constexpr int inputs[] = {2, dims_index, value_index};
  constexpr int outputs[] = {1, output_index};
  - tflite::micro::KernelRunner runner{tflite::Register_FILL(),
  + const auto registration = tflite::Register_FILL();
  + tflite::micro::KernelRunner runner{registration,
  tensors,
  sizeof(tensors) / sizeof(TfLiteTensor),
  IntArrayFromInts(inputs),
  