message: Fix memory error where delegate->flags was not initialized.
diff: @@ -1320,6 +1320,7 @@ TEST(TestDelegateOwnership, ProperlyDisposed) {
  struct TfLiteInterpreterOwnedDelegate : public TfLiteDelegate {
  TfLiteInterpreterOwnedDelegate(bool* destroyed, bool* prepared)
  : destroyed(destroyed), prepared(prepared) {
  + flags = kTfLiteDelegateFlagsNone;
  Prepare = [](TfLiteContext*, TfLiteDelegate* delegate) -> TfLiteStatus {
  *static_cast<TfLiteInterpreterOwnedDelegate*>(delegate)->prepared =
  true;
  