Extra space on the end of the address link

I just noticed this – the mailto: link is fine, but the link has an extra space on the end – checked in Firefox and IE10.

It looks like this:
[email protected] .
(Hmmm, the formatting here hides the extended underlining, the code looks like this – note the space at the end).
<a href="mailto:[email protected]">[email protected] </a>.

Instead of this:
[email protected].
<a href="mailto:[email protected]">[email protected]</a>.

I have had a look at the code, but it is beyond my simple skills.

https://www.ads-software.com/plugins/email-obfuscate-shortcode/