[gnome-control-center] sound: volume is unsigned so cannot be <= 0

[Bastien Nocera <hadess src gnome org>]

commit bafe9c40200ab33e43b255c76ff6ec34ef30dade
Author: Bastien Nocera <hadess hadess net>
Date:   Thu Oct 20 16:08:53 2011 +0100

    sound: volume is unsigned so cannot be <= 0

 panels/sound/gvc-stream-status-icon.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/panels/sound/gvc-stream-status-icon.c b/panels/sound/gvc-stream-status-icon.c
index 8cf4e13..6071de8 100644
--- a/panels/sound/gvc-stream-status-icon.c
+++ b/panels/sound/gvc-stream-status-icon.c
@@ -388,7 +388,7 @@ update_icon (GvcStreamStatusIcon *icon)
         can_decibel = gvc_mixer_stream_get_can_decibel (icon->priv->mixer_stream);
 
         /* select image */
-        if (volume <= 0 || is_muted) {
+        if (volume == 0 || is_muted) {
                 n = 0;
         } else {
                 n = 3 * volume / PA_VOLUME_NORM + 1;