In fork.py's make_receipt, multiple if/return blocks are followed by an else

[SamWilsn]

For example:

execution-specs/src/ethereum/london/fork.py

Lines 484 to 489 in cd9b7d6

	if isinstance(tx, AccessListTransaction):
	return b"\x01" + rlp.encode(receipt)
	if isinstance(tx, FeeMarketTransaction):
	return b"\x02" + rlp.encode(receipt)
	else:
	return receipt

This is a really weird construct. Either they should all be elif or we shouldn't have the else:.

Originally posted by @SamWilsn in #867 (comment)

[richardgreg]

Could you assign me to this task?

[SamWilsn]

@richardgreg feel free to take a stab at it (don't forget to make a separate PR targeting forks/cancun). Thanks!

[richardgreg]

(don't forget to make a separate PR targeting forks/cancun). Thanks!

Because of the above comment, I opened a PR targeting the cancun branch. lol. I hope I did the right thing. If not, let me know and I'll open it against the master branch 🙂