[NI] Fix resulting type when there are no proper constraints

compiler/resolution/src/org/jetbrains/kotlin/resolve/calls/inference/components/ResultTypeResolver.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 +49,7 @@ class ResultTypeResolver(
 
         // no proper constraints
         return variableWithConstraints.typeVariable.freshTypeConstructor.builtIns.run {
-            if (direction == ResolveDirection.TO_SUBTYPE) nothingType else anyType
+            if (direction == ResolveDirection.TO_SUBTYPE) nothingType else nullableAnyType
         }
     }