Fix buffer overflow in get_cmd_class_name()
Fix buffer overflow in get_cmd_class_name()

* The array must allocate to include terminating null character.

Change-Id: I646228ea8cc72dc0a730efc2173b28f0b287cbdf
Signed-off-by: Frank TEO <4077aea94d444a13dc44d8733c1454d07661697f@ymail.com>

Z-WavePublic/libzwaveip,Z-WavePublic/libzwaveip,Z-WavePublic/libzwaveip