[PATCH] alsa: control_led - fix initialization in the mode show callback

[Takashi Iwai]

On Mon, 14 Jun 2021 09:17:10 +0200,
Jaroslav Kysela wrote:
> 
> The str variable should be always initialized before use even if
> the switch covers all cases. This is a minimalistic fix: Assign NULL,
> the sprintf() may print '(null)' if something is corrupted.
> 
> Signed-off-by: Jaroslav Kysela <perex at perex.cz>

Thanks, applied.


Takashi