Change ValueError message to needing bytes
Change ValueError message to needing bytes

The ValueError raised here claims to need a string like object, but in
fact needs a bytes-like object, possibly due to the recent py2 -> 3
change

Signed-off-by: Bryer Esengard <181aefa51a0ea1588a19e4ea2a56a79219cbf265@ainfosec.com>

OpenXT/icbinn,OpenXT/icbinn,OpenXT/icbinn,OpenXT/icbinn