incorrect encoding lette html

[umount]

The letter (html) is incorrectly decoded when there is a broked symbol

The file lib/washtml.php about loading of a beaten file all is used that after a beaten place is incorrectly coded.

in this place.
@$node->loadHTML($html);                                                                    
return $this->dumpHtml($node);

Use UTF-8.

if
-@$node->loadHTML($html);                                                                    
-return $this->dumpHtml($node);
+return $html;

All letter doesn't break, incorrect symbol not from that coding is simply passed