Fix gnt-instance modify breakage due to hvm_boot_order

As reported by hypnoce@gmail.com, this is missing a check on None. As we don't
care about uppercase, we keep the check simple by removing the lower() call.

Reviewed-by: ultrotter

diff --git a/scripts/gnt-instance b/scripts/gnt-instance
index bfa0c81..464ead3 100755 (executable)
--- a/scripts/gnt-instance
+++ b/scripts/gnt-instance
@@ -677,7 +677,7 @@ def SetInstanceParms(opts, args):
 
   kernel_path = _TransformPath(opts.kernel_path)
   initrd_path = _TransformPath(opts.initrd_path)
-  if opts.hvm_boot_order.lower() == 'default':
+  if opts.hvm_boot_order == 'default':
     hvm_boot_order = constants.VALUE_DEFAULT
   else:
     hvm_boot_order = opts.hvm_boot_order