Make sure HTML part size>0 before assuming the message has got HTML part

Aleksander Machniak

2012-10-31 9c299eb9e695810272ed90c35993d34157d0d6ae

 program/include/rcube_message.php

@@ -483,7 +483,7 @@
                    if ($plugin['abort'])
                        continue;

                    if ($part_mimetype == 'text/html') {
                    if ($part_mimetype == 'text/html' && $mail_part->size) {
                        $got_html_part = true;
                    }