Fix(Reporting): Fix LIMIT clause (#332)

* Fix(Reporting): Fix LIMIT clause

* Apply suggestions from code review

---------

Co-authored-by: Romain B. <8530352+Rom1-B@users.noreply.github.com>

Author: stonebuzz

CHANGELOG.md

@@ -11,7 +11,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 - Fix SQL alias errors for reportVstackbarLifetime chart
 - Fix empty `WHERE` clause
-- Fix dashbaord error on display
+- Fix `limit` clause
+- Fix dashboard error on display
 
 ## [1.9.2] - 2025-12-02
 

inc/helpdeskplus.class.php

@@ -664,7 +664,7 @@ public function reportHbarTopcategory($config = [])
 
         //Init delay value
         $delay = PluginMreportingCommon::getCriteriaDate('glpi_tickets.date', $config['delay'], $config['randname']);
-        $limit = isset($_SESSION['mreporting_values']['glpilist_limit']) ? '0, ' . $_SESSION['mreporting_values']['glpilist_limit'] : '0, 20';
+        $limit = $_SESSION['mreporting_values']['glpilist_limit'] ?? 20;
 
         $query = [
             "SELECT" => [
@@ -718,7 +718,7 @@ public function reportHbarTopapplicant($config = [])
 
         //Init delay value
         $delay = PluginMreportingCommon::getCriteriaDate('glpi_tickets.date', $config['delay'], $config['randname']);
-        $limit = isset($_SESSION['mreporting_values']['glpilist_limit']) ? '0, ' . $_SESSION['mreporting_values']['glpilist_limit'] : '0, 20';
+        $limit = $_SESSION['mreporting_values']['glpilist_limit'] ?? 20;
 
         $query = [
             "SELECT" => [