On disptacher error, raises error 404 instead of 500

library/Zend/Controller/Dispatcher/Standard.php

@@ -134,8 +134,8 @@ class Zend_Controller_Dispatcher_Standard extends Zend_Controller_Dispatcher_Abs
 
     /**
      * Remove a controller directory by module name
-     * 
-     * @param  string $module 
+     *
+     * @param  string $module
      * @return bool
      */
     public function removeControllerDirectory($module)
@@ -230,7 +230,6 @@ class Zend_Controller_Dispatcher_Standard extends Zend_Controller_Dispatcher_Abs
     public function dispatch(Zend_Controller_Request_Abstract $request, Zend_Controller_Response_Abstract $response)
     {
         $this->setResponse($response);
-
         /**
          * Get controller class
          */
@@ -238,7 +237,7 @@ class Zend_Controller_Dispatcher_Standard extends Zend_Controller_Dispatcher_Abs
             $controller = $request->getControllerName();
             if (!$this->getParam('useDefaultControllerAlways') && !empty($controller)) {
                 require_once 'Zend/Controller/Dispatcher/Exception.php';
-                throw new Zend_Controller_Dispatcher_Exception('Invalid controller specified (' . $request->getControllerName() . ')');
+                throw new Zend_Controller_Dispatcher_Exception('Invalid controller specified (' . $request->getControllerName() . ')', 404);
             }
 
             $className = $this->getDefaultControllerClass($request);
@@ -319,8 +318,8 @@ class Zend_Controller_Dispatcher_Standard extends Zend_Controller_Dispatcher_Abs
     public function loadClass($className)
     {
         $finalClass  = $className;
-        if (($this->_defaultModule != $this->_curModule) 
-            || $this->getParam('prefixDefaultModule')) 
+        if (($this->_defaultModule != $this->_curModule)
+            || $this->getParam('prefixDefaultModule'))
         {
             $finalClass = $this->formatClassName($this->_curModule, $className);
         }