This fixes the OP Legacy Consensus engine VerifyHeaders function. When VerifyHeaders is called, only the first block is stored in the database & the reset are passed in as a slice. We previously called VerifyHeader from VerifyHeaders which would expect that the block's parent was in the database. This modifies VerifyHeaders to check that the first block is in the database & then checks the blocks one by one through the slice.
Description
This fixes the OP Legacy Consensus engine
VerifyHeadersfunction. WhenVerifyHeadersis called, only the first block is stored in the database & the reset are passed in as a slice. We previously calledVerifyHeaderfromVerifyHeaderswhich would expect that the block's parent was in the database. This modifiesVerifyHeadersto check that the first block is in the database & then checks the blocks one by one through the slice.Tests
I have tested this on op-goerli & op-mainnet.