fix missing context in accounts methods

remix-lib/src/execution/txRunner.js

@@ -147,7 +147,7 @@ class TxRunner {
   }
 
   runBlockInVm (tx, block, callback) {
-    this.executionContext.vm().runBlock({ block: block, generate: true, skipBlockValidation: true, skipBalance: false }).then(function (results) {
+    this.executionContext.vm().runBlock({ block: block, generate: true, skipBlockValidation: true, skipBalance: false }).then((results) => {
       let result = results.results[0]
       if (result) {
         const status = result.execResult.exceptionError ? 0 : 1

remix-simulator/src/provider.js

@@ -17,7 +17,7 @@ var Provider = function (options) {
   this.options = options || {}
   // TODO: init executionContext here
   this.executionContext = executionContext
-  this.Accounts = new Accounts()
+  this.Accounts = new Accounts(this.executionContext)
   this.Transactions = new Transactions(this.executionContext)
 
   this.methods = {}