#125 Fix `property_size = sizeof(name)`

[Dabe Murphy]

https://github.com/chirlu/sox/pull/6

When I upgraded from Mojave to Monterey, I could no longer specify a particular audio device using the device enumeration hack:

sox -V6 -n -t coreaudio bogus

(They ALL listed my HDMI monitor, not "External Headphones", etc.)

Anyway, I tracked it down to a simple fix: resetting property_size = sizeof(name)