spiceqxl_audio: Only condense the fifo list when one has been closed
spiceqxl_audio: Only condense the fifo list when one has been closed

Signed-off-by: Francois Gouget <6b915da68578f6eb004fe99432b967565fc9be8f@codeweavers.com>

fgouget/xf86-video-qxl,fgouget/xf86-video-qxl,fgouget/xf86-video-qxl,fgouget/xf86-video-qxl