Fix NPE in parser.

dart/tests/language/src/SyntaxTest.dart

Index: dart/tests/language/src/SyntaxTest.dart
diff --git a/dart/tests/language/src/SyntaxTest.dart b/dart/tests/language/src/SyntaxTest.dart
index 2a4a923c3cfcb4ae28d7c9fb7c74f7c85536efad..6d176c05386344fffb7caa4bd40aa8516e74ff82 100644
--- a/dart/tests/language/src/SyntaxTest.dart
+++ b/dart/tests/language/src/SyntaxTest.dart
@@ -229,8 +229,14 @@ main() {
     print(null is void); /// 62: compile-time error
     new B();
 
+    new Bad();
+
   } catch (var ex) {
     // Swallowing exceptions. Any error should be a compile-time error
     // which kills the current isolate.
   }
 }
+
+class Bad {
+  factory Bad<Bad(String type) { return null; } /// 63: compile-time error
+}