Staging: comedi: add a missing break statement

This is a static checker fix.  From the context it looks like there
should be a break here.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/ni_tiocmd.c

@@ -159,6 +159,7 @@ static int ni_tio_input_cmd(struct ni_gpct *counter, struct comedi_async *async)
 		async->inttrig = NULL;
 		mite_dma_arm(counter->mite_chan);
 		retval = ni_tio_arm(counter, 1, cmd->start_arg);
+		break;
 	case TRIG_OTHER:
 		async->inttrig = NULL;
 		mite_dma_arm(counter->mite_chan);