Declare variable at the top of the block, which is needed from the change in commit 1bad7865.
1bad7865
https://bugzilla.gnome.org/show_bug.cgi?id=739005
GtkStatusIcon is using a problematic, XEmbed-based protocol under X, and we want to get rid of it eventually. Document our intentions by marking GtkStatusIcon as deprecated. https://bugzilla.gnome.org/show_bug.cgi?id=734826