The struct s1810c_state_packet contains the array in the first field
hence zero-initialization requires a more couple of braces. Fix the
compile warning pointing it out:
sound/usb/mixer_s1810c.c: In function 'snd_sc1810c_get_status_field':
sound/usb/mixer_s1810c.c:178:9: warning: missing braces around initializer [-Wmissing-braces]