Prevent null reference when importing OVF files from web server
Prevent null reference when importing OVF files from web server

Signed-off-by: Danilo Del Busso <766dc0f994b57f2d2e98930ecfa5ee8fb1091a62@citrix.com>

xenserver/xenadmin,kc284/xenadmin,xenserver/xenadmin,kc284/xenadmin,kc284/xenadmin,kc284/xenadmin,kc284/xenadmin,xenserver/xenadmin