Uncaught TypeError: Cannot read property 'msExtendedCode' of null

Created by: abuisine

• Dash.js version: 2.2.0
• Browser name/version:
• OS name/version: Android

Steps to reproduce

1. Open content which is not correctly supported by the device

Observed behaviour

msExtendedCode should not be called on a non existing error object

Good management of a null error object at the beginning of the function

    function onPlaybackError(e) {
        var code = e.error ? e.error.code : 0;
        var msg = '';

        if (code === -1) {
            // not an error!
            return;
        }

        switch (code) {
            case 1:
                msg = 'MEDIA_ERR_ABORTED';
                break;
            case 2:
                msg = 'MEDIA_ERR_NETWORK';
                break;
            case 3:
                msg = 'MEDIA_ERR_DECODE';
                break;
            case 4:
                msg = 'MEDIA_ERR_SRC_NOT_SUPPORTED';
                break;
            case 5:
                msg = 'MEDIA_ERR_ENCRYPTED';
                break;
            default:
                msg = 'UNKNOWN';
                break;
        }

        hasMediaError = true;

Missing management of a null error object here

        if (e.error.msExtendedCode) {
            msg += ' (0x' + (e.error.msExtendedCode >>> 0).toString(16).toUpperCase() + ')';
        }
        log('Video Element Error: ' + msg);
        if (e.error) {
            log(e.error);
        }
        errHandler.mediaSourceError(msg);
        reset();
    }