Exception thrown when invoking reset() on the player too early

Created by: sepviz

If reset() is invoked shorty after initialize(), the following instruction fails in DashParser.js:

xlinkController.setMatchers(matchers);

because xlinkController is not defined yet. This can be reproduced consistently in chrome by adding player.reset() in the init() function of the sample page manual-load-single-video.html like this:

   function init() {
        var video,
            player,
            url = "http://dash.edgesuite.net/envivio/EnvivioDash3/manifest.mpd";
        video = document.querySelector("video");
        player = dashjs.MediaPlayer().create();
        player.initialize(video, url, true);
        player.reset();
    }