Fix unmute when boot different audio hw

I was reminded of this problem when testing booting Easy Scarthgap 6.6.1 from USB-stick on my collection of computers.

At the very first bootup, script /usr/bin/delayedrun unmutes the audio and sets a level of 80%. That's good, but then bootup on other computers and the audio icon in the tray shows as muted, with level 8%, then requires manual unmute and set level.

This is now fixed. Bootup on a different computer for the first time, and audio is unmuted and set to 80%. See commit:

https://github.com/bkauler/woofq/commit/805604c9e9cffcaedbe923fae25e21fdb8f4eede   

Tags: easy