Added more exception handling in FtpClient.Dispose().
Added more exception handling in FtpClient.Dispose().

robinrodricks/FluentFTP,shaneray/ShaneSpace.FtpClient,worstenbrood/FluentFTP,hgupta9/FluentFTP,robinrodricks/FluentFTP,kendallb/System.Net.FtpClient,robinrodricks/FluentFTP,shaneray/ShaneSpace.FtpClient