Doesn't catch unclosed tags

[kevinresol]

jsx('
	<div>
		<p>Paragraph</p>
	<div/>
');

The above code is unclosed, but parsed as if it is closed with an extra </div>
This cause some hard-to-notice bug when there are some typos (just as in the case above it should be </div> instead of <div/>)

[elsassph]

This is really an odd behaviour from the built-in XML parser...