remove all trailing tabs and spaces
diff --git a/test/UsefulBuf_Tests.h b/test/UsefulBuf_Tests.h
index 649d6a8..976de62 100644
--- a/test/UsefulBuf_Tests.h
+++ b/test/UsefulBuf_Tests.h
@@ -2,7 +2,7 @@
  Copyright (c) 2016-2018, The Linux Foundation.
  Copyright (c) 2018, Laurence Lundblade.
  All rights reserved.
- 
+
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are
 met:
@@ -16,7 +16,7 @@
       contributors, nor the name "Laurence Lundblade" may be used to
       endorse or promote products derived from this software without
       specific prior written permission.
- 
+
 THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT