Fixed wrong linearization for open classes and traits.

openList changed during neighbors calculation because the same TLinkable object cannot be put into more than one TLinkedList at the same time.

#KT-3499 fixed

js/js.tests/test/org/jetbrains/k2js/test/semantics/ClassInheritanceTest.java

@@ -55,6 +55,10 @@ public final class ClassInheritanceTest extends SingleFileTranslationTest {
     public void testAbstractVarOverride() throws Exception {
         fooBoxTest();
     }
+
+    public void testKt3499() throws Exception {
+        fooBoxTest();
+    }
 }