VarianceChecker: correct handing of nested classes and their methods #KT-14733 Fixed

idea/testData/inspections/addVarianceModifier/innerClass.kt

@@ -0,0 +1,16 @@
+
+abstract class TestOut<T> {
+    abstract fun test(): T
+
+    abstract inner class InnerTest {
+        abstract fun innerTest(test: T)
+    }
+}
+
+abstract class TestIn<T> {
+    abstract fun test(test: T)
+
+    abstract inner class InnerTest {
+        abstract fun innerTest(): T
+    }
+}