option elements in datalist are wrongly closed #866
Description
When having a <datalist>, containing some <option> elements this will result in a structure like:
<datalist>
<option label="Label A" value="1">
<option label="Label B" value="2">
<option label="Label C" value="3">
<option label="Label D" value="4">
</option>
</option>
</option>
</option>
</datalist>
However these elements are not supposed to be closed and especially not in such an order.