[NI] Use definitely not-null types for smartcasts

compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/checkers/ProtectedSyntheticExtensionCallChecker.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2016 JetBrains s.r.o.
+ * Copyright 2010-2017 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -49,7 +49,8 @@ object ProtectedSyntheticExtensionCallChecker : CallChecker {
 
         val receiverValue = resolvedCall.extensionReceiver as ReceiverValue
         val receiverTypes = listOf(receiverValue.type) + context.dataFlowInfo.getStableTypes(
-                DataFlowValueFactory.createDataFlowValue(receiverValue, context.trace.bindingContext, context.scope.ownerDescriptor)
+                DataFlowValueFactory.createDataFlowValue(receiverValue, context.trace.bindingContext, context.scope.ownerDescriptor),
+                context.languageVersionSettings
         )
 
         if (receiverTypes.none { Visibilities.isVisible(getReceiverValueWithSmartCast(null, it), sourceFunction, from) }) {