check inner class access for top level classes only (IDEA-188716)

java/java-analysis-impl/src/com/intellij/codeInsight/daemon/impl/analysis/HighlightClassUtil.java

@@ -790,7 +790,7 @@ public class HighlightClassUtil {
         if (resolve instanceof PsiClass) {
           final PsiClass base = (PsiClass)resolve;
           final PsiClass baseClass = base.getContainingClass();
-          if (baseClass != null && base.hasModifierProperty(PsiModifier.PRIVATE) && baseClass == containerClass) {
+          if (baseClass != null && base.hasModifierProperty(PsiModifier.PRIVATE) && baseClass == containerClass && baseClass.getContainingClass() == null) {
             String description = JavaErrorMessages.message("private.symbol",
                                                            HighlightUtil.formatClass(base),
                                                            HighlightUtil.formatClass(baseClass));

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting7/InnerInTypeArguments.java

@@ -1,3 +1,11 @@
+import java.util.List;
+
 class A<T extends <error descr="'A.B' has private access in 'A'">A<T>.B</error>> {
     private class B {}
 }
+
+abstract class Outer implements <error descr="'Outer.Inner' has private access in 'Outer'">List<Outer.Inner></error> {
+  private static abstract class Inner implements List<Inner.Key> {
+    private static final class Key {}
+  }
+}