alsa-lib virtual rawmidi device: fixed typo (NONBLOCK mode)
alsa-lib virtual rawmidi device: fixed typo (NONBLOCK mode)

See bug#1821 for details.

tiwai/alsa-lib,gittup/alsa-lib,takaswie/alsa-lib,mikelima/alsa-lib,mengdonglin/alsa-lib,lgirdwood/alsa-lib,alsa-project/alsa-lib,takaswie/alsa-lib,takaswie/alsa-lib,alsa-project/alsa-lib,zedongchen/alsa-lib,gittup/alsa-lib,gittup/alsa-lib,alsa-project/alsa-lib,takaswie/alsa-lib,tiwai/alsa-lib,alsa-project/alsa-lib,mengdonglin/alsa-lib,lgirdwood/alsa-lib,zedongchen/alsa-lib,Distrotech/alsa-lib,lgirdwood/alsa-lib,gittup/alsa-lib,mikelima/alsa-lib,mengdonglin/alsa-lib,lgirdwood/alsa-lib,Distrotech/alsa-lib,Distrotech/alsa-lib,tiwai/alsa-lib,tiwai/alsa-lib,Distrotech/alsa-lib,zedongchen/alsa-lib,lgirdwood/alsa-lib,takaswie/alsa-lib,mikelima/alsa-lib,mengdonglin/alsa-lib,zedongchen/alsa-lib,mikelima/alsa-lib,zedongchen/alsa-lib,mengdonglin/alsa-lib,Distrotech/alsa-lib,mikelima/alsa-lib