#4712 remove warnings undefined variable

main/install/index.php

@@ -37,6 +37,7 @@ if (!function_exists('version_compare') || version_compare( phpversion(), REQUIR
 
 /*		INITIALIZATION SECTION */
 
+ob_implicit_flush(true);
 session_start();
 
 // Including necessary libraries.
@@ -824,8 +825,7 @@ if (@$_POST['step2']) {
 		include 'install_files.inc.php';
 	}
     $current_step = 7;
-    $nbr_courses = isset($nbr_courses) ? $nbr_courses : null;
-    display_after_install_message($installType, $nbr_courses);
+    display_after_install_message($installType);
 
 } elseif ($_POST['step1'] || $badUpdatePath) {
 	//STEP 1 : REQUIREMENTS

main/install/install.lib.php

@@ -1942,7 +1942,7 @@ function display_configuration_settings_form($installType, $urlForm, $languageFo
 /**
  * After installation is completed (step 6), this message is displayed.
  */
-function display_after_install_message($installType, $nbr_courses) {
+function display_after_install_message($installType) {
     ?>
     <div class="RequirementHeading">
     	<h2><?php echo display_step_sequence() . get_lang('CfgSetting'); ?></h2>