telefireone-v1.0: Use a boolean value for ao_log_running

Instead of reading a hex value and saving it directly, use
zero/none-zero to compute a boolean instead, avoiding a type
conversion warning.

Signed-off-by: Keith Packard <[email protected]>

Author: keith-packard

src/telefireone-v1.0/ao_telefireone.c

@@ -26,7 +26,7 @@
 static void
 set_logging(void)
 {
-	ao_log_running = ao_cmd_hex();
+	ao_log_running = ao_cmd_hex() != 0;
 	ao_wakeup(&ao_log_running);
 }