usx2y: Null-cycle warning message is now issued iwhen on verbose mode only.

git-svn-id: svn+ssh://jackaudio.org/trunk/jack@908 0c269be4-1314-0410-8aa9-9f06e86f4224

drivers/alsa/usx2y.c

@@ -366,7 +366,8 @@ usx2y_driver_null_cycle (alsa_driver_t* driver, jack_nframes_t nframes)
 	snd_pcm_uframes_t contiguous, contiguous_;
 	int chn;
 
-	MESSAGE("usx2y_driver_null_cycle (%p, %i)\n", driver, nframes);
+	VERBOSE(driver->engine,
+		"usx2y_driver_null_cycle (%p, %i)\n", driver, nframes);
 
 	if (driver->capture_handle) {
 		nf = nframes;