Remove trailing whitespace.

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

library/HTMLPurifier/ConfigSchema/Interchange.php

@@ -7,22 +7,22 @@
  */
 class HTMLPurifier_ConfigSchema_Interchange
 {
-    
+
     /**
      * Name of the application this schema is describing.
      */
     public $name;
-    
+
     /**
      * Array of Namespace ID => array(namespace info)
      */
     public $namespaces = array();
-    
+
     /**
      * Array of Directive ID => array(directive info)
      */
     public $directives = array();
-    
+
     /**
      * Adds a namespace array to $namespaces
      */
@@ -32,7 +32,7 @@ class HTMLPurifier_ConfigSchema_Interchange
         }
         $this->namespaces[$i] = $namespace;
     }
-    
+
     /**
      * Adds a directive array to $directives
      */
@@ -42,7 +42,7 @@ class HTMLPurifier_ConfigSchema_Interchange
         }
         $this->directives[$i] = $directive;
     }
-    
+
     /**
      * Convenience function to perform standard validation. Throws exception
      * on failed validation.
@@ -51,5 +51,5 @@ class HTMLPurifier_ConfigSchema_Interchange
         $validator = new HTMLPurifier_ConfigSchema_Validator();
         return $validator->validate($this);
     }
-    
+
 }