Fix this warning :
  drivers/acpi/events/evmisc.c: In function `acpi_ev_global_lock_handler':
  drivers/acpi/events/evmisc.c:334: warning: unused variable `status'
Signed-off-by: NJesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: NLen Brown <len.brown@intel.com>