FIX: accountancy general ledger: bad handling of hook return

Author: marc-dll

htdocs/accountancy/bookkeeping/listbyaccount.php

@@ -675,7 +675,7 @@
 $newcardbutton = empty($hookmanager->resPrint) ? '' : $hookmanager->resPrint;
 
 if (empty($reshook)) {
-	$newcardbutton = dolGetButtonTitle($langs->trans('ViewFlatList'), '', 'fa fa-list paddingleft imgforviewmode', DOL_URL_ROOT.'/accountancy/bookkeeping/list.php?'.$param);
+	$newcardbutton .= dolGetButtonTitle($langs->trans('ViewFlatList'), '', 'fa fa-list paddingleft imgforviewmode', DOL_URL_ROOT.'/accountancy/bookkeeping/list.php?'.$param);
 	if ($type == 'sub') {
 		$newcardbutton .= dolGetButtonTitle($langs->trans('GroupByAccountAccounting'), '', 'fa fa-stream paddingleft imgforviewmode', DOL_URL_ROOT . '/accountancy/bookkeeping/listbyaccount.php?' . $url_param, '', 1, array('morecss' => 'marginleftonly'));
 		$newcardbutton .= dolGetButtonTitle($langs->trans('GroupBySubAccountAccounting'), '', 'fa fa-align-left vmirror paddingleft imgforviewmode', DOL_URL_ROOT . '/accountancy/bookkeeping/listbyaccount.php?type=sub&' . $url_param, '', 1, array('morecss' => 'marginleftonly btnTitleSelected'));