sound/oss: Adjust confusing if indentation

Indent the branch of an if.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r disable braces4@
position p1,p2;
statement S1,S2;
@@

(
if (...) { ... }
|
if (...) S1@p1 S2@p2
)

@script:python@
p1 << r.p1;
p2 << r.p2;
@@

if (p1[0].column == p2[0].column):
  cocci.print_main("branch",p1)
  cocci.print_secs("after",p2)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/oss/ad1848.c

@@ -716,7 +716,7 @@ static int ad1848_mixer_ioctl(int dev, unsigned int cmd, void __user *arg)
 				
 				default:
 					if (get_user(val, (int __user *)arg))
-					return -EFAULT;
+						return -EFAULT;
 					val = ad1848_mixer_set(devc, cmd & 0xff, val);
 					break;
 			}