fix wrong gasUsed

BlockchainTests.md

@@ -91,7 +91,7 @@ OK: 1/1 Fail: 0/1 Skip: 0/1
 + wrongCoinbase.json                                              OK
   wrongDifficulty.json                                            Skip
 + wrongGasLimit.json                                              OK
-  wrongGasUsed.json                                               Skip
++ wrongGasUsed.json                                               OK
   wrongMixHash.json                                               Skip
   wrongNonce.json                                                 Skip
 + wrongNumber.json                                                OK
@@ -103,7 +103,7 @@ OK: 1/1 Fail: 0/1 Skip: 0/1
 + wrongTransactionsTrie.json                                      OK
 + wrongUncleHash.json                                             OK
 ```
-OK: 18/23 Fail: 0/23 Skip: 5/23
+OK: 19/23 Fail: 0/23 Skip: 4/23
 ## bcMultiChainTest
 ```diff
 + CallContractFromNotBestBlock.json                               OK
@@ -404,4 +404,4 @@ OK: 20/20 Fail: 0/20 Skip: 0/20
 OK: 5/5 Fail: 0/5 Skip: 0/5
 
 ---TOTAL---
-OK: 260/318 Fail: 0/318 Skip: 58/318
+OK: 261/318 Fail: 0/318 Skip: 57/318

tests/test_blockchain_json.nim

@@ -259,6 +259,9 @@ proc processBlock(vmState: BaseVMState, minedBlock: PlainBlock, fork: Fork) =
       raise newException(ValidationError, "could not get sender")
     vmState.receipts[txIndex] = makeReceipt(vmState, fork)
 
+  if vmState.cumulativeGasUsed != minedBlock.header.gasUsed:
+    raise newException(ValidationError, "wrong gas used in header")
+
   assignBlockRewards(minedBlock, vmState, fork, vmState.chainDB)
 
 func validateBlockUnchanged(a, b: PlainBlock): bool =

tests/test_generalstate_failing.nim

@@ -82,7 +82,6 @@ func allowedFailingGeneralStateTest*(folder, name: string): bool =
     # bcInvalidHeaderTest
     "DifficultyIsZero.json",
     "wrongDifficulty.json",
-    "wrongGasUsed.json",
     "wrongMixHash.json",
     "wrongNonce.json",