Remove trailing whitespace.

Signed-off-by: Edward Z. Yang <edwardzyang@thewritingpot.com>

tests/HTMLPurifier/Strategy/CoreTest.php

@@ -2,43 +2,43 @@
 
 class HTMLPurifier_Strategy_CoreTest extends HTMLPurifier_StrategyHarness
 {
-    
+
     function setUp() {
         parent::setUp();
         $this->obj = new HTMLPurifier_Strategy_Core();
     }
-    
+
     function testBlankInput() {
         $this->assertResult('');
     }
-    
+
     function testMakeWellFormed() {
         $this->assertResult(
             '<b>Make well formed.',
             '<b>Make well formed.</b>'
         );
     }
-    
+
     function testFixNesting() {
         $this->assertResult(
             '<b><div>Fix nesting.</div></b>',
             '<b></b><div>Fix nesting.</div>'
         );
     }
-    
+
     function testRemoveForeignElements() {
         $this->assertResult(
             '<asdf>Foreign element removal.</asdf>',
             'Foreign element removal.'
         );
     }
-    
+
     function testFirstThree() {
         $this->assertResult(
             '<foo><b><div>All three.</div></b>',
             '<b></b><div>All three.</div>'
         );
     }
-    
+
 }