Staging: comedi: cb_pcidas64: fixed a coding style missed in the previous patch

Fixed a coding style issue.
Signed-off-by: Jason Wong <tsanghan@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/comedi/drivers/cb_pcidas64.c

@@ -1921,7 +1921,7 @@ static int detach(struct comedi_device *dev)
 						    ao_dma_desc_bus_addr);
 			if (priv(dev)->main_phys_iobase)
 				comedi_pci_disable(priv(dev)->hw_dev);
-	
+
 			pci_dev_put(priv(dev)->hw_dev);
 		}
 	}