Bug-fix review request: GtkStatusbar displays removed message

[Phillip Wood <phillip wood talktalk net>]

Would anyone be able to spare a few minutes to review this fix please.
Its been sitting in bugzilla since February and is blocking some changes
I want to make to sound-juicer. It's a simple fix for a simple problem
so it shouldn't take long to review.

GtkStatusbar displays removed message
https://bugzilla.gnome.org/show_bug.cgi?id=724281

Many Thanks

Phillip Wood