Add Exception to the class name for recently added exception classes

tests/standalone/io/http_redirect_test.dart

Index: tests/standalone/io/http_redirect_test.dart
diff --git a/tests/standalone/io/http_redirect_test.dart b/tests/standalone/io/http_redirect_test.dart
index 99b0a36dedc6f8aa1762e85d6de47868cbbf687e..65513a986010ad2372f179d3846e428762f2a219 100644
--- a/tests/standalone/io/http_redirect_test.dart
+++ b/tests/standalone/io/http_redirect_test.dart
@@ -101,7 +101,7 @@ void testAutoRedirect() {
     response.inputStream.onClosed = () => Expect.fail("Response not expected");
   };
   conn.onError = (e) {
-    Expect.isTrue(e is RedirectLimitExceeded);
+    Expect.isTrue(e is RedirectLimitExceededException);
     Expect.equals(5, e.redirects.length);
     server.close();
     client.shutdown();
@@ -120,7 +120,7 @@ void testRedirectLoop() {
     response.inputStream.onClosed = () => Expect.fail("Response not expected");
   };
   conn.onError = (e) {
-    Expect.isTrue(e is RedirectLoop);
+    Expect.isTrue(e is RedirectLoopException);
     Expect.equals(2, e.redirects.length);
     server.close();
     client.shutdown();