nubus: fix mis-indented statement

It seems this is the right way around because otherwise the len usage in
the outer loop would be pretty pointless.

Signed-off-by: Ilpo Järvinen <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/nubus/nubus.c

···
 	{
 		while(not_useful(p,map))
 			p++;
-			p++;
+		p++;
 		len--;
 	}
 	*ptr = p;