Update leeco.py

[huichen90]

Fixed this bug ：youtube_dl.utils.ExtractorError: An extractor error has occurred. (caused by KeyError('location',));

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[huichen90]

Fixed this bug ：youtube_dl.utils.ExtractorError: An extractor error has occurred. (caused by KeyError('location',));

[yan12125]

Thanks for fixing this! It's better to use a more descriptive commit message the next time. (e.g.: leeco: fix KeyError('location',))