commander: added some comments

src/modules/commander/commander.cpp

@@ -1432,6 +1432,7 @@ int commander_thread_main(int argc, char *argv[])
 	pthread_attr_setstacksize(&commander_low_prio_attr, 2880);
 
 #ifndef __PX4_QURT
+	// This is not supported by QURT (yet).
 	struct sched_param param;
 	(void)pthread_attr_getschedparam(&commander_low_prio_attr, &param);
 
@@ -2195,7 +2196,7 @@ int commander_thread_main(int argc, char *argv[])
 		if (!status.rc_input_blocked && sp_man.timestamp != 0 &&
 		    (hrt_absolute_time() < sp_man.timestamp + (uint64_t)(rc_loss_timeout * 1e6f))) {
 #else
-		// HACK: remove old data check due to timestamp issue in QURT
+		// XXX HACK: remove old data check due to timestamp issue in QURT
 		if (!status.rc_input_blocked && sp_man.timestamp != 0) {
 #endif
 			/* handle the case where RC signal was regained */