Don't prepend <br> if Recipient and or Organisation are empty

[jmslbam]

E.g

$address_formatter['ADMIN_AREA'] = 'Zuid Holland';
$address_formatter['LOCALITY'] = 'Rotterdam'
$address_formatter['POSTAL_CODE'] = '1234AL;
$address_formatter['STREET_ADDRESS'] = 'Highstreet 1337';
$address_formatter['COUNTRY'] = 'Netherlands';

$address_formatter['RECIPIENT'] = '';
$address_formatter['ORGANIZATION'] = '';

//Get the address in localised format
$html = true; // Optional - return the address in HTML <br> instead of \n new lines

$address = $address_formatter->formatAddress($html);

The it returns

<br>Highstreet 1337
<br>1234AL Rotterdam

But the first <br> is not needed, because we don't have a recipient and or organisation.

I have worked around this by adding added $address = trim($address, '<br>'); to my own code because I know I never have something prepended, but it might not be a solid solution know that I think about it.

So the PR, might also not be waterproof if the Locale changes.

Kind regrads,

Jaime!