fix(daemon): send WaitGroup by reference
fix(daemon): send WaitGroup by reference

The WaitGroup needs to be passed by reference otherwise Done() won't
decrement the WaitGroup that we are actually waiting on.

jonboulle/locksmith,chrissnell/locksmith,crawford/locksmith,coreos/locksmith,npateriya/locksmith,coreos/locksmith,crawford/locksmith,mischief/locksmith,npateriya/locksmith,marineam/locksmith,jonboulle/locksmith,marineam/locksmith,mischief/locksmith,chrissnell/locksmith