So, normally you'd be right. However, the party has changed so many rules to bind delegates to a candidate and give all delegates of a state to anyone with 51% of the vote that they are in completely uncharted territory. We're not sure what would happen if Trump dies after getting enough delegates to lock up the nomination or (worse case scenario for the GOP) he dies after becoming the nominee.

It's honestly fucking bonkers the way they've changed the rules and provided for no alternative.