[vala] warning: `Gtk.StatusIcon' has been deprecated since 3.14
We should update the usage of deprecated `Gtk.StatusIcon'
[12/52] Compiling Vala source ../src/tray.vala ../src/tray-gtk.vala
../src/tray-gtk.vala:23.3-23.28: warning: `Gtk.StatusIcon' has been deprecated since 3.14
Gtk.StatusIcon status_icon;
^^^^^^^^^^^^^^^^^^^^^^^^^^
../src/tray-gtk.vala:26.22-26.35: warning: `Gtk.StatusIcon' has been deprecated since 3.14
status_icon = new Gtk.StatusIcon ();
^^^^^^^^^^^^^^
Compilation succeeded - 2 warning(s)