--- xnu/xnu-344.49/iokit/Kernel/IOEventSource.cpp
+++ xnu/xnu-792.6.56/iokit/Kernel/IOEventSource.cpp
@@ -2,8 +2,6 @@
  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_LICENSE_HEADER_START@
- * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
  * 
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
@@ -57,7 +55,7 @@
         { workLoop->wakeupGate(event, oneThread); }
 
 bool IOEventSource::init(OSObject *inOwner,
-                         Action inAction = 0)
+                         Action inAction)
 {
     if (!inOwner)
         return false;