Refactoring to avoid repetition and ensure the checks take place and exceptions
are thrown at the right time.
Signed-off-by: Konstantina Chremmou <konstantina.chremmou@citrix.com>
leftover from the time when the OVF wizards were a XenCenter plugin; the latter
has now been removed).
Signed-off-by: Konstantina Chremmou <konstantina.chremmou@citrix.com>
removed uninitialised streams which we were taking care to close. Solution-wide
style: use string.IsNullOrEmpty method instead of checking separately for null
and zero length.
Signed-off-by: Konstantina Chremmou <konstantina.chremmou@citrix.com>
