Issue 4040. Fix NPE when report problem with no node.

editor/tools/plugins/com.google.dart.tools.core_test/src/com/google/dart/tools/core/internal/completion/CompletionEngineTest.java

Index: editor/tools/plugins/com.google.dart.tools.core_test/src/com/google/dart/tools/core/internal/completion/CompletionEngineTest.java
diff --git a/editor/tools/plugins/com.google.dart.tools.core_test/src/com/google/dart/tools/core/internal/completion/CompletionEngineTest.java b/editor/tools/plugins/com.google.dart.tools.core_test/src/com/google/dart/tools/core/internal/completion/CompletionEngineTest.java
index dc886ac67871c544ed039f0ad91d8e0fe844a6d9..1ec8af2f7b99816b87b6ac0bb6bc596d33782e3f 100644
--- a/editor/tools/plugins/com.google.dart.tools.core_test/src/com/google/dart/tools/core/internal/completion/CompletionEngineTest.java
+++ b/editor/tools/plugins/com.google.dart.tools.core_test/src/com/google/dart/tools/core/internal/completion/CompletionEngineTest.java
@@ -281,7 +281,7 @@ public class CompletionEngineTest extends TestCase {
    */
   public void testCommentSnippets044() throws Exception {
     // see testCompletion_alias_field for reason to not check for XXX in completion list
-//    test("class XXX {XXX.fisk();}main() {main(); new !1}}", "1+List");
+    test("class XXX {XXX.fisk();}main() {main(); new !1}}", "1+List");
   }
 
   public void testCommentSnippets045() throws Exception {