Remove forced line breaks between message array elements.

The following commit breaks the order confirmations sent out by ubercart.
http://drupalcode.org/project/htmlmail.git/commitdiff/e80afff44d3809ab72...

Ubercart 7.x-3.0, HTML Mail 7.x-2.65, Mail System 7.x-2.34, Rules 7.x-2.1

When reverting this change the order confirmations looks normal again.
The broken order confirmations have *a lot* of < br / >:s after every row, creating a lot of whitespace that isn't supposed to be there.
It seems like every newline in the template are converted to a < br / >.

However, this only happens for the order confirmation sent out by rules. If I select to email a order confirmation in the Ubercart Store configuration it looks good.

I use the following patch to revert the change that breaks the template:

--- a/www/sites/all/modules/htmlmail/htmlmail.mail.inc
+++ b/www/sites/all/modules/htmlmail/htmlmail.mail.inc
@@ -46,7 +46,7 @@ class HTMLMailSystem implements MailSystemInterface {
     }
     else {
       if (is_array($message['body'])) {
-        $message['body'] = implode("<br />$eol<br />$eol", $message['body']);
+        $message['body'] = implode("$eol$eol", $message['body']);
       }
       $body = theme('htmlmail', $message);
       if ($message['body'] && !$body) {