Fix useCall in VM mode

src/universal-dapp.js

@@ -836,7 +836,7 @@ UniversalDApp.prototype.rawRunTx = function (args, cb) {
       self.vm.runTx({block: block, tx: tx, skipBalance: true, skipNonce: true}, function (err, result) {
         var transactionHash = self.txdebugger.web3().releaseCurrentHash() // used to keep track of the transaction
         if (args.useCall) {
-          self.vm.stateManager.revert()
+          self.vm.stateManager.revert(function () {})
         }
         cb(err, {
           result: result,