core/state: access trie through Database interface, track errors (#14589)

With this commit, core/state's access to the underlying key/value database is
mediated through an interface. Database errors are tracked in StateDB and
returned by CommitTo or the new Error method.

Motivation for this change: We can remove the light client's duplicated copy of
core/state. The light client now supports node iteration, so tracing and storage
enumeration can work with the light client (not implemented in this commit).

1 files changed, 1 insertions, 1 deletions

diff --git a/eth/downloader/downloader_test.go b/eth/downloader/downloader_test.go
index 267a0def9..1fb5a0910 100644
--- a/eth/downloader/downloader_test.go
+++ b/eth/downloader/downloader_test.go
@@ -657,7 +657,7 @@ func assertOwnForkedChain(t *testing.T, tester *downloadTester, common int, leng
 			index = len(tester.ownHashes) - lengths[len(lengths)-1] + int(tester.downloader.queue.fastSyncPivot)
 		}
 		if index > 0 {
-			if statedb, err := state.New(tester.ownHeaders[tester.ownHashes[index]].Root, tester.stateDb); statedb == nil || err != nil {
+			if statedb, err := state.New(tester.ownHeaders[tester.ownHashes[index]].Root, state.NewDatabase(tester.stateDb)); statedb == nil || err != nil {
 				t.Fatalf("state reconstruction failed: %v", err)
 			}
 		}