Wrong device list in alsa

Hi!

I have a problem with QAudioDeviceInfo on some linux systems with alsa sound system. If I query a device list with QList<QAudioDeviceInfo> availableDevices ( QAudio::Mode mode ) and a default device is defined in alsa I will only get this default device, because if at least one device with the description "Default Audio Device" is found only these devices are collected and returned. I've attached a patch in which default devices are prepended in the list and other devices are appended. Due to this the default device is always the first in the list, but all other devices are still available.

thanks!