Fix displaying of multipart/alternative messages with empty parts (#1488750)

Aleksander Machniak

2012-10-12 5f409583008dfbfa4b5e160f7ec9b1cc7a4766d2

 program/include/rcube_message.php

@@ -371,6 +371,10 @@
            foreach ($structure->parts as $p => $sub_part) {
                $sub_mimetype = $sub_part->mimetype;

                // skip empty parts
                if (!$sub_part->size)
                    continue;

                // check if sub part is
                if ($sub_mimetype == 'text/plain')
                    $plain_part = $p;