Fix minore

Author: Pek5892

ajax_dataload.php

@@ -133,7 +133,7 @@
 
             // Formattazione HTML
             if (empty($total['html_format'][$pos]) && !empty($value)) {
-                $value = strip_tags($value);
+                $value = strip_tags($value?:'');
             }
 
             // Formattazione automatica

log.php

@@ -80,7 +80,7 @@
                         <td>'.$log['username'].'</td>
                         <td class="tip" title="'.$created_at->format('d/m/Y H:i:s').'">'.$created_at->diffForHumans().'</td>
                         <td>'.$log['ip'].'</td>
-                        <td class="user-agent tip" title="'.strip_tags($log['user_agent']).'">'.$log['user_agent'].'</td>
+                        <td class="user-agent tip" title="'.strip_tags($log['user_agent']?:'').'">'.$log['user_agent'].'</td>
                         <td><span class="badge badge-'.$type.'">'.$stato.'</span></td>
                     </tr>';
 }