[gnome-control-center] applications: Add missing creation of cancellable

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 0f257d24514af4b7c7ce22bccd4379c3f175e32d
Author: Robert Ancell <robert ancell canonical com>
Date:   Mon Mar 11 14:30:06 2019 +1300

    applications: Add missing creation of cancellable

 panels/applications/cc-applications-panel.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/panels/applications/cc-applications-panel.c b/panels/applications/cc-applications-panel.c
index abf5c2b1f..b4aae5838 100644
--- a/panels/applications/cc-applications-panel.c
+++ b/panels/applications/cc-applications-panel.c
@@ -1646,6 +1646,8 @@ cc_applications_panel_init (CcApplicationsPanel *self)
 
   gtk_widget_init_template (GTK_WIDGET (self));
 
+  self->cancellable = g_cancellable_new ();
+
   provider = GTK_STYLE_PROVIDER (gtk_css_provider_new ());
   gtk_css_provider_load_from_resource (GTK_CSS_PROVIDER (provider),
                                        "/org/gnome/control-center/applications/cc-applications-panel.css");