Fix fatal error when parsing UUencoded messages (#1489119)

CHANGELOG

@@ -1,6 +1,7 @@
 CHANGELOG Roundcube Webmail
 ===========================
 
+- Fix fatal error when parsing UUencoded messages (#1489119)
 - Change Reply-All button label/title when mailing list is detected (#1488938)
 - Fix SMTP connection using IPv6 address in smtp_server option (#1489024)
 - Added attachment_reminder plugin

program/lib/Roundcube/rcube_message.php

@@ -785,7 +785,7 @@ class rcube_message
                 $uupart->size     = strlen($uupart->body);
                 $uupart->mime_id  = 'uu.' . $part->mime_id . '.' . $pid;
 
-                $ctype = rcube_mime::content_type($uupart->body, $uupart->filename, 'application/octet-stream', true);
+                $ctype = rcube_mime::file_content_type($uupart->body, $uupart->filename, 'application/octet-stream', true);
                 $uupart->mimetype = $ctype;
                 list($uupart->ctype_primary, $uupart->ctype_secondary) = explode('/', $ctype);