audio_thread_alsa: check pipe() result
audio_thread_alsa: check pipe() result

reuben/freshplayerplugin,Papapashu/freshplayerplugin,grevutiu-gabriel/freshplayerplugin,grevutiu-gabriel/freshplayerplugin,Papapashu/freshplayerplugin,Papapashu/freshplayerplugin,reuben/freshplayerplugin,reuben/freshplayerplugin