fix: undefined current user id

Author: harunollyo

templates/learning-area/index.php

@@ -17,6 +17,7 @@
 wp_head();
 
 // Tutor global variable for using inside learning area.
+$current_user_id            = get_current_user_id();
 $tutor_current_post_type    = get_post_type();
 $tutor_current_post         = get_post();
 $tutor_current_content_id   = get_the_ID();
@@ -26,7 +27,6 @@
 $tutor_is_enrolled          = tutor_utils()->is_enrolled( $tutor_course_id );
 $tutor_is_public_course     = Course_List::is_public( $tutor_course_id );
 $tutor_is_course_instructor = tutor_utils()->has_user_course_content_access( $current_user_id, $tutor_course_id );
-$current_user_id            = get_current_user_id();
 
 $subpages = Template::make_learning_area_sub_page_nav_items();
 ?>