Test for obsolete KT-6453

#KT-6453 Obsolete

compiler/testData/codegen/boxInline/private/kt6453.1.kt

@@ -0,0 +1,7 @@
+import test.*
+
+fun box(): String {
+    var r = "fail"
+    A().foo { r = it }
+    return r
+}

compiler/testData/codegen/boxInline/private/kt6453.2.kt

@@ -0,0 +1,8 @@
+package test
+
+class A() {
+    private val x = "OK"
+    internal inline fun foo(p: (String) -> Unit) {
+        p(x)
+    }
+}