What does Quduri say when an ill person dies without recovering and no make-up interval occurred?

Kitab al-Sawm: Illness, Travel, Make-up Fasts and Delayed Qaḍāʾ

• All days became make-up duties
• Expiation is automatically due for each day
• Qaḍāʾ did not become binding in that case
• Heirs must personally fast those days