- qemudDomainAttachPciControllerDevice: Don't build "devstr"
  if "-device" of qemu is not available, as "devstr" will only
  be used by "qemuMonitorAddDevice", which depends on "-device"
  argument of qemu is supported.

- "qemudDomainSaveImageOpen": Fix indent problem.

* src/qemu/qemu_driver.c