[ros-kernel] Patch: don't crash if DriverEntry fails

[Joseph G. <gal...@va...>]

io/device.c
io/driver.c
ldr/loader.c

* Call RtlCreateUnicodeString() instead of
  RtlInitUnicodeString() when initializing
  the DeviceNode->ServiceName, since
  IopFreeDeviceNode() will use RtlFreeUnicodeString()
  on it.

* Call ObDerefernceObject() instead of
  ExFreePool() to release the DeviceObject
  if DriverEntry fails. (Thanks, Eric.)

Thanks,

- Joseph