ucm: Use strncmp to avoid access-out-of-boundary
ucm: Use strncmp to avoid access-out-of-boundary

If the length of the identifier is less than the length of the prefix,
access-out-of-boundary will occur in memcmp().

Signed-off-by: paulhsia <e09ac2debfefa3666e69a4e41e179a1517e8fddf@chromium.org>
Signed-off-by: Jaroslav Kysela <72edd5e1a572f82f059ccbb83c92b74d6cb051ff@perex.cz>

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