remove all trailing tabs and spaces
diff --git a/test/run_tests.h b/test/run_tests.h
index 498554e..431ef22 100644
--- a/test/run_tests.h
+++ b/test/run_tests.h
@@ -1,10 +1,10 @@
 
 /*==============================================================================
  run_tests.c -- test aggregator and results reporting
-  
+
  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:
@@ -17,7 +17,7 @@
     * The name "Laurence Lundblade" may not 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