Delete pressed in table cell causes an error

[Piotrek Koszuliński]

Use this HTML:

<table border="1" cellpadding="1" cellspacing="1" style="width:500px">
	<tbody>
		<tr>
			<td>
			<p>&nbsp;</p>
			</td>
			<td>&nbsp;</td>
		</tr>
	</tbody>
</table>

1. Place caret in first table cell.
2. Press delete. Sometimes you'll need to press delete multiple times or move caret here and there before.
3. Error is thrown.

Uncaught TypeError: Cannot read property 'type' of null range.js:1526
CKEDITOR.dom.range.setStart range.js:1526
CKEDITOR.dom.range.setStartAfter range.js:1573
CKEDITOR.dom.range.setStartAt range.js:1618
CKEDITOR.dom.range.moveToPosition range.js:1489
CKEDITOR.dom.range.moveToElementEditablePosition range.js:2047
CKEDITOR.dom.range.moveToElementEditEnd range.js:2157
(anonymous function)

Starts in: ​https://github.com/ckeditor/ckeditor-dev/blob/c240965c7134620f8d2fe2c36f865197dc280aa9/core/editable.js#L653

Reproduced it on IE9 and Chrome.