[enterBr] Extra line break added to the list item when applying a style

[Wiktor Walc]

In enter mode = BR use the following selection:

<ul>
	<li>
		aaa [bbb</li>
	<li>
		ccc] ddd</li>
</ul>

and apply bold, italic, underline.

Result:

<ul>
	<li>
		aaa <u><em><strong>[bbb</strong></em></u><br />
		<br />
		<br />
		&nbsp;</li>
	<li>
		<u><em><strong>ccc]</strong></em></u> ddd</li>
</ul>

Caused by [6373].