Update memDB/chain use with eth_trie changes

tests/test_precompiles.nim

@@ -7,7 +7,7 @@
 
 import
   unittest, ../nimbus/vm/precompiles, json, byteutils, test_helpers, ospaths, tables,
-  strformat, strutils, eth_trie/[types, memdb], eth_common, ../nimbus/db/[db_chain, state_db],
+  strformat, strutils, eth_trie/db, eth_common, ../nimbus/db/[db_chain, state_db],
   ../nimbus/[constants, vm_types, vm_state], ../nimbus/vm/[computation, message], macros
 
 proc initAddress(i: byte): EthAddress = result[19] = i
@@ -23,7 +23,6 @@ template doTest(fixture: JsonNode, address: byte, action: untyped): untyped =
     var
       dataStr = test["input"].getStr
       data = if dataStr.len > 0: dataStr.hexToSeqByte else: @[]
-      memDb = newMemDB()
       vmState = newBaseVMState(header, newBaseChainDB(newMemoryDb()))
       gas = 1_000_000.GasInt
       gasPrice = 1.GasInt

tests/test_rpc.nim

@@ -5,7 +5,8 @@ import
   ../nimbus/constants,
   ../nimbus/nimbus/[vm_state, config],
   ../nimbus/db/[state_db, db_chain], eth_common, byteutils,
-  eth_trie/[memDb, types],
+  ../nimbus/p2p/chain,
+  eth_trie/db,
   eth_p2p, eth_keys
 import rpcclient/test_hexstrings
 
@@ -42,12 +43,12 @@ proc doTests =
   # TODO: Include other transports such as Http
   var ethNode = setupEthNode()
   let
-    emptyRlpHash = keccak256.digest(rlp.encode("").toOpenArray)
+    emptyRlpHash = keccak256.digest(rlp.encode(""))
     header = BlockHeader(stateRoot: emptyRlpHash)
   var
     chain = newBaseChainDB(newMemoryDb())
     state = newBaseVMState(header, chain)
-  ethNode.chain = chain
+  ethNode.chain = newChain(chain)
 
   let
     balance = 100.u256