x/evm: Modify the Copy function in CommitStateDB (#720)

Author: summerpro

x/evm/types/statedb.go

@@ -784,6 +784,14 @@ func CopyCommitStateDB(from, to *CommitStateDB) {
 to.preimages = make([]preimageEntry, len(from.preimages))
 to.hashToPreimageIndex = make(map[ethcmn.Hash]int, len(from.hashToPreimageIndex))
 to.journal = newJournal()
+to.thash = from.thash
+to.bhash = from.bhash
+to.txIndex = from.txIndex
+validRevisions := make([]revision, len(from.validRevisions))
+copy(validRevisions, from.validRevisions)
+to.validRevisions = validRevisions
+to.nextRevisionID = from.nextRevisionID
+to.accessList = from.accessList.Copy()
 
 // copy the dirty states, logs, and preimages
 for _, dirty := range from.journal.dirties {