sox src/coreaudio device name truncation fix

[gqrxzy8974@ftml.net]

I haven't tested this but it appears the code:

https://sourceforge.net/p/sox/code/ci/master/tree/src/coreaudio.c#l154
                  char name[256];
                  status = AudioDeviceGetProperty(devices[i],0,false,kAudioDevicePropertyDeviceName,&property_size,&name);

Needs to have
                  property_size = sizeof(name);
added before the  AudioDeviceGetProperty call.

Otherwise  property_size has the left over length from the previous request for the list of devices.  I'm seeing
returned names truncated to 11 characters which is 12 including the \0 which matches the
3 device id's (at 4 bytes each) returned by the previous use of property_size.

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