fix code to compile under java 11 as well

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/graphInference/Javac8UnCaptureBug.java

@@ -0,0 +1,19 @@
+import java.util.function.Predicate;
+
+class B<T> {
+    public static <E> B<E> from( Iterable<? extends E> iterable) {
+        return null;
+    }
+
+    void m(Iterable<? extends T> it, Predicate<? super T> p) {
+        <error descr="Incompatible types. Found: 'B<capture<? extends T>>', required: 'B<T>'">B<T> B = from(it).bar(not(p));</error>
+    }
+
+    B<T> bar(Predicate<? super T> p) {
+        return this;
+    }
+
+    public static <N> Predicate<N> not(Predicate<? super N> c) {
+        return null;
+    }
+}

java/java-tests/testSrc/com/intellij/java/codeInsight/daemon/lambda/GraphInferenceHighlightingTest.java

@@ -201,6 +201,7 @@ public class GraphInferenceHighlightingTest extends LightDaemonAnalyzerTestCase
     doTest();
   }
   public void testNotInferredVarShouldNotBeUsedForInferenceJava10() { doTest(); }
+  public void testJavac8UnCaptureBug() { doTest(); }
   public void testTopLevelParentNoParameters() {
     doTest();
   }

platform/util/src/com/intellij/util/containers/FilteredTraverserBase.java

@@ -241,7 +241,8 @@ public abstract class FilteredTraverserBase<T, Self extends FilteredTraverserBas
       return JBIterable.empty();
     }
     else if (myMeta.regard.next == null && myMeta.forceDisregard.next == null) {
-      return JBIterable.from(myTree.fun(node)).filter(not(myMeta.forceIgnore.OR));
+      JBIterable<T> from = JBIterable.from(myTree.fun(node));
+      return from.filter(not(myMeta.forceIgnore.OR));
     }
     else {
       // traverse subtree to select accepted children