Merge pull request #8026 from c3do/patch-3

Fix #8026 Remove PHP Warning adding empty($page)

htdocs/accountancy/bookkeeping/list.php

@@ -85,7 +85,7 @@
 $sortfield = GETPOST('sortfield', 'alpha');
 $sortorder = GETPOST('sortorder', 'alpha');
 $page = GETPOST('page','int');
-if ($page < 0) { $page = 0; }
+if (empty($page) || $page < 0) { $page = 0; }
 $offset = $limit * $page;
 $pageprev = $page - 1;
 $pagenext = $page + 1;