CreateWebserviceException() fix when 503 BadGataway status code received #71
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If the website is down for maintenance, it returns the 503 error code and the following page causing MusicBrainzClient to throw the System.Runtime.Serialization.SerializationException exception with the following message instead of WebServiceException:
There was an error deserializing the object of type Hqub.MusicBrainz.MusicBrainzClient+ResponseError. Encountered unexpected character '<'.
The fix catches any exception that may occur during deserialization and throws the WebServiceException exception instead with the status code as a message.
This is the 503 response page from MusicBrainz: