Improve some debug messages

src/audio/alsa/backend.rs

@@ -113,6 +113,9 @@ impl AudioFrontend for AlsaBackend {
             *ac = AlsaCard::new(card_name, elem_name, cb)?;
         }
 
+        debug!("New card name: {}", self.card_name().unwrap());
+        debug!("New chan name: {}", self.chan_name().unwrap());
+
         invoke_handlers(
             &self.handlers.borrow(),
             AudioSignal::CardInitialized,

src/audio/alsa/card.rs

@@ -233,7 +233,6 @@ extern "C" fn watch_cb(
 
         match stat {
             glib_sys::G_IO_STATUS_AGAIN => {
-                debug!("G_IO_STATUS_AGAIN");
                 continue;
             }
             glib_sys::G_IO_STATUS_NORMAL => {