Remove trailing whitespace.

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

tests/HTMLPurifier/Injector/LinkifyTest.php

@@ -2,44 +2,44 @@
 
 class HTMLPurifier_Injector_LinkifyTest extends HTMLPurifier_InjectorHarness
 {
-    
+
     function setup() {
         parent::setup();
         $this->config->set('AutoFormat', 'Linkify', true);
     }
-    
+
     function testLinkifyURLInRootNode() {
         $this->assertResult(
             'http://example.com',
             '<a href="http://example.com">http://example.com</a>'
         );
     }
-    
+
     function testLinkifyURLInInlineNode() {
         $this->assertResult(
             '<b>http://example.com</b>',
             '<b><a href="http://example.com">http://example.com</a></b>'
         );
     }
-    
+
     function testBasicUsageCase() {
         $this->assertResult(
             'This URL http://example.com is what you need',
             'This URL <a href="http://example.com">http://example.com</a> is what you need'
         );
     }
-    
+
     function testIgnoreURLInATag() {
         $this->assertResult(
             '<a>http://example.com/</a>'
         );
     }
-    
+
     function testNeeded() {
         $this->config->set('HTML', 'Allowed', 'b');
         $this->expectError('Cannot enable Linkify injector because a is not allowed');
         $this->assertResult('http://example.com/');
     }
-    
+
 }