IndexedDB: Result of failed request should be |undefined|

LayoutTests/storage/indexeddb/resources/intversion-close-in-oncomplete.js

 if (this.importScripts) {
     importScripts('../../../resources/js-test.js');
     importScripts('shared.js');
 }
 
 description("Call db.close() in the complete handler for a version change transaction, before the success event associated with the open call fires");
 
 function test()
 {
     removeVendorPrefixes();
@@ skipping 28 matching lines @@
         debug("transaction.oncomplete:");
         evalAndLog("sawTransactionComplete = true");
         evalAndLog("db.close()");
     };
 }
 
 function openError(evt)
 {
     preamble(evt);
     shouldBeTrue("sawTransactionComplete");
-    shouldBeNull("event.target.result");
+    shouldBeUndefined("event.target.result");
+    shouldBeNonNull("event.target.error");
     shouldBeEqualToString("event.target.error.name", "AbortError");
     evalAndExpectException("transaction = db.transaction('os', 'readwrite')", "DOMException.INVALID_STATE_ERR", "'InvalidStateError'");
     finishJSTest();
 }
 
 test();