Minor - fix php notices

main/lp/learnpath.class.php

@@ -484,7 +484,7 @@ class learnpath
     public function add_item(
         $parent,
         $previous,
-        $type = 'dir',
+        $type,
         $id,
         $title,
         $description,

main/lp/scormItem.class.php

@@ -35,7 +35,7 @@ class scormItem extends learnpathItem
      * @param mixed  $element   Depending on the type given, DB id for the lp_item or reference to the DOM element
      * @param int    $course_id
      */
-    public function __construct($type = 'manifest', &$element, $course_id = 0)
+    public function __construct($type, &$element, $course_id = 0)
     {
         if (isset($element)) {
             // Parsing using PHP5 DOMXML methods.

main/lp/scormMetadata.class.php

@@ -27,7 +27,7 @@ class scormMetadata
      * @param	mixed	Depending on the type, can be the DB ID of the learnpath item or
      * the pointer to the <metadata> element in the imsmanifest.xml file
      */
-    public function __construct($type = 'manifest', &$element)
+    public function __construct($type, &$element)
     {
         if (isset($element)) {
             // Parsing using PHP5 DOMXML methods.

main/lp/scormOrganization.class.php

@@ -26,7 +26,7 @@ class scormOrganization
      * @param    string    Type of construction needed ('db' or 'manifest', default = 'manifest')
      * @param    mixed    Depending on the type given, DB id for the lp_item or reference to the DOM element
      */
-    public function __construct($type = 'manifest', &$element, $scorm_charset = 'UTF-8')
+    public function __construct($type, &$element, $scorm_charset = 'UTF-8')
     {
         if (isset($element)) {
             // Parsing using PHP5 DOMXML methods.