Fix link sometimes fails because of id not defined

htdocs/core/class/html.form.class.php

@@ -5312,6 +5312,7 @@ class Form
 				$i = 0;
 
 				print '<br><form action="" method="POST" name="LinkedOrder">';
+				print '<input type="hidden" name="id" value="'.$object->id.'">';
 				print '<table class="noborder">';
 				print '<tr class="liste_titre">';
 				print '<td class="nowrap"></td>';