[gnome-shell] volume: Suppress a critical warning

[Florian MÃllner <fmuellner src gnome org>]

commit d07c8dcd9c8dc19aa686130aaa9b65ea7b12095f
Author: Florian MÃllner <fmuellner gnome org>
Date:   Fri Feb 1 20:19:02 2013 +0100

    volume: Suppress a critical warning
    
    gvc_mixer_stream_get_port() emits a warning in the no-ports case,
    which we can avoid by rearranging the check for that case.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=693049

 js/ui/status/volume.js |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)
---
diff --git a/js/ui/status/volume.js b/js/ui/status/volume.js
index b25060c..8075496 100644
--- a/js/ui/status/volume.js
+++ b/js/ui/status/volume.js
@@ -169,9 +169,8 @@ const OutputStreamSlider = new Lang.Class({
         // a bit hackish, but ALSA/PulseAudio have a number
         // of different identifiers for headphones, and I could
         // not find the complete list
-        let port = sink.get_port();
-        if (port)
-            return port.port.indexOf('headphone') >= 0;
+        if (sink.get_ports().length > 0)
+            return sink.get_port().port.indexOf('headphone') >= 0;
 
         return false;
     },