Fix goto class action in Idea 13.1

idea/testData/navigation/gotoClass/enumEntries.kt

@@ -0,0 +1,11 @@
+package some.small
+
+public enum class EnumClass {
+    EnumClassTrue
+    EnumClassFalse
+}
+
+// Check that enum class present but entries are not
+
+// SEARCH_TEXT: EnumClass
+// REF: (some.small).EnumClass