KT-4140 VerifyError: Property in class object

#KT-4140  Fixed

compiler/testData/codegen/box/properties/kt4140.kt

@@ -0,0 +1,16 @@
+class TestObject()
+{
+    class object {
+        var prop: Int = 1
+            get() = $prop++
+    }
+}
+
+fun box(): String {
+
+    if (TestObject.prop != 1) return "fail 1"
+
+    if (TestObject.prop != 2) return "fail 2"
+
+    return "OK"
+}