virtual_oss: Combine -d, -l and -L option getopt code

[christos]

Summary

Sponsored by: The FreeBSD Foundation
MFC after: 1 week

[christos]

Fix switch case.

[markj]

usr.sbin/virtual_oss/virtual_oss/main.c

2260

What is the difference between -d and -l?

[markj]

usr.sbin/virtual_oss/virtual_oss/main.c

2260

Oh, I see, it's the last parameter to dup_profile(). Then you can collapse the calls:

ptr = dup_profile(&profile, opt_amp, opt_pol, opt_mute[0], opt_mute[1], c == 'L', c == 'd');

[christos]

Address Mark's comment.