Added check for trailing whitespaces and corrected existing violations.

test/mjsunit/instanceof.js

Index: test/mjsunit/instanceof.js
diff --git a/test/mjsunit/instanceof.js b/test/mjsunit/instanceof.js
index 01ea4268e6d68c11e63c147f1850b624c8876cfc..050ef2d9d77de97839d928a151d337977ef0fec6 100644
--- a/test/mjsunit/instanceof.js
+++ b/test/mjsunit/instanceof.js
@@ -60,10 +60,10 @@ TestChains();
 
 function TestExceptions() {
   function F() { }
-  var items = [ 1, new Number(42), 
-                true, 
+  var items = [ 1, new Number(42),
+                true,
                 'string', new String('hest'),
-                {}, [], 
+                {}, [],
                 F, new F(),
                 Object, String ];