ALSA: korg1212: Use guard() for mutex locks

Replace the manual mutex lock/unlock pairs with guard() for code
simplification.

Only code refactoring, and no behavior change.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250829144342.4290-38-tiwai@suse.de
This commit is contained in:
Takashi Iwai 2025-08-29 16:43:12 +02:00
commit 940653fff0