Add missing delayTestFinish() to GwtServletBaseTest.

Change-Id: I9e47d29e9ea6903f45fc8e786f143c09b0a1e683
Review-Link: https://gwt-review.googlesource.com/#/c/2180/

Review by: skybrian@google.com

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@11548 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/user/test/com/google/gwt/core/client/GwtServletBaseTest.java b/user/test/com/google/gwt/core/client/GwtServletBaseTest.java
index 965df27..64108e5 100644
--- a/user/test/com/google/gwt/core/client/GwtServletBaseTest.java
+++ b/user/test/com/google/gwt/core/client/GwtServletBaseTest.java
@@ -132,6 +132,7 @@
     }
     RequestBuilder cookieReq = new RequestBuilder(RequestBuilder.POST, GWT.getModuleBaseURL()
         + "servlet");
+    delayTestFinish(TIMEOUT_IN_MS);
     cookieReq.sendRequest(cookieLocale, new RequestCallback() {
       @Override
       public void onError(Request request, Throwable exception) {