rawmidi: fix memory leak in snd_rawmidi_virtual_open
rawmidi: fix memory leak in snd_rawmidi_virtual_open

Signed-off-by: Alex Henrie <139449a27381270391752f9e0993fccac55fea0e@gmail.com>
Signed-off-by: Takashi Iwai <4596b3305151c7ee743192a95d394341e3d3b644@suse.de>

takaswie/alsa-lib,alsa-project/alsa-lib,takaswie/alsa-lib,tiwai/alsa-lib,alsa-project/alsa-lib,tiwai/alsa-lib,takaswie/alsa-lib,alsa-project/alsa-lib,takaswie/alsa-lib,tiwai/alsa-lib,takaswie/alsa-lib,tiwai/alsa-lib,alsa-project/alsa-lib