Fixed bug introduced in last revision; When file size was unavailable downloads failed.
Fixed bug introduced in last revision; When file size was unavailable downloads failed.

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