Parent for thisReceiver of IrLazyClass is the corresponding class

Fixes issue in Kotlin/Native.

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/lazy/IrLazyClass.kt

@@ -72,7 +72,7 @@ class IrLazyClass(
 
     override var thisReceiver: IrValueParameter? by lazyVar {
         typeTranslator.buildWithScope(this) {
-            descriptor.thisAsReceiverParameter.generateReceiverParameterStub()
+            descriptor.thisAsReceiverParameter.generateReceiverParameterStub().apply { parent = this@IrLazyClass }
         }
     }