[Bug 47023] Volume Applet displays mute icon while not muted

[Jonathon Conte]

Public bug reported:

I'm running Dapper RC. When the volume is decreased to the lowest value
on the Volume Applet, the mute icon is displayed despite sound still
being heard. The user cannot visually differentiate between whether the
audio is muted or not since both states can share the same icon.

Suggested fix: Only show the mute icon on the volume applet when the
audio output is truly muted.

** Affects: gnome-applets (Ubuntu)
     Importance: Low
         Status: Unconfirmed

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Volume Applet displays mute icon while not muted
https://launchpad.net/bugs/47023