Minor - fix PHP warning

main/inc/lib/custom_pages.class.php

@@ -2,7 +2,7 @@
 
 /**
  *  Used to implement the loading of custom pages
- * 
+ *
  * @license see /license.txt
  * @author 2011, Jean-Karim Bockstael <jeankarim@cblue.be>
  * @author Laurent Opprecht <laurent@opprecht.info> for the Univesity of Geneva
@@ -27,7 +27,7 @@ class CustomPages
 
     /**
      * Returns the path to a custom page.
-     * 
+     *
      * @param string $name
      * @return string
      */
@@ -38,7 +38,7 @@ class CustomPages
 
     /**
      * If enabled display a custom page and exist. Otherwise log error and returns.
-     * 
+     *
      * @param string $page_name
      * @param array $content used to path data to the custom page
      */
@@ -53,15 +53,15 @@ class CustomPages
             include($file);
             exit;
         } else {
-            error_log('CustomPages::displayPage : could not read file ' . $file_name);
+            error_log('CustomPages::displayPage : could not read file ' . $file);
         }
     }
 
     /**
-     * Does not look like this function is being used is being used 
-     * 
+     * Does not look like this function is being used is being used
+     *
      * @param type $url_id
-     * @return string 
+     * @return string
      */
     public static function getURLImages($url_id = null)
     {
@@ -79,4 +79,4 @@ class CustomPages
         return $images;
     }
 
-}
+}