tty_audit: use TASK_COMM_LEN for task comm

This is the preferred way of declaring an array for get_task_comm().

Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20230621101611.10580-2-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: Jiri Slaby

drivers/tty/tty_audit.c

@@ -69,7 +69,7 @@ static void tty_audit_log(const char *description, dev_t dev,
 
 	ab = audit_log_start(audit_context(), GFP_KERNEL, AUDIT_TTY);
 	if (ab) {
-		char name[sizeof(current->comm)];
+		char name[TASK_COMM_LEN];
 
 		audit_log_format(ab, "%s pid=%u uid=%u auid=%u ses=%u major=%d"
 				 " minor=%d comm=", description, pid, uid,