Remove 0/NULL global variable assignment in mixer-test.c and pcm-test.c
Signed-off-by: Nikola Z. Ivanov <zlatistiv@gmail.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://patch.msgid.link/20250821200132.1218850-1-zlatistiv@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>