message: Update the TF_RETURN_IF_ERROR macro to let the compiler move the result.
diff: @@ -70,7 +70,7 @@ void AppendToMessage(::tensorflow::Status* status, Args... args) {
  // For propagating errors when calling a function.
  #define TF_RETURN_IF_ERROR(...) \
  do { \
  - const ::tensorflow::Status _status = (__VA_ARGS__); \
  + ::tensorflow::Status _status = (__VA_ARGS__); \
  if (TF_PREDICT_FALSE(!_status.ok())) return _status; \
  } while (0)
  