Bug avatar auto delete

[Schaeffer]

Operating System: Linux
SinusBot Version: 0.9.18-8499d2c
TS3 Version: 3.0.18

Problem Description
As soon as we met the avatar by default it disappeared automatically at the end of 5 seconds

registerPlugin({
    name: 'Covatar - Cover 2 Avatar V2',
    version: '1.0',
    description: 'This script will set the avatar from the cover info of the current track.',
    author: 'Michael Friese <[email protected]> and Etsukazu Aoi <[email protected]>',
    vars: {}
}, function(sinusbot, config) {
    sinusbot.on('track', function(ev) {
        if (!ev.thumbnail){
            sinusbot.downloadTrackThumbnail(ev.uuid,'http://i40.tinypic.com/t6dno2.jpg');
        }
        if (!sinusbot.setAvatarFromTrack()) {
            sinusbot.setDefaultAvatar();
        }
    });
   
    sinusbot.on('trackEnd', function(ev) {
        sinusbot.setDefaultAvatar();
    });
   
});