[gnome-control-center] info: Fix crash when opening Overview panel

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

commit 35e670c6dab4d263b4adcafb48ed423424c88f8a
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Wed Jan 17 22:13:27 2018 -0200

    info: Fix crash when opening Overview panel
    
    The GType of CcHostnameEntry might not be registered
    by the time the Overview panel is initialized, which
    leads to crash.
    
    Fix that by ensuring the CcHostnameEntry type early in
    class_init.

 panels/info/cc-info-overview-panel.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/panels/info/cc-info-overview-panel.c b/panels/info/cc-info-overview-panel.c
index 5c54f62..49727a5 100644
--- a/panels/info/cc-info-overview-panel.c
+++ b/panels/info/cc-info-overview-panel.c
@@ -21,6 +21,8 @@
 
 #include <config.h>
 
+#include "shell/cc-hostname-entry.h"
+
 #include "cc-info-resources.h"
 #include "info-cleanup.h"
 
@@ -929,6 +931,8 @@ cc_info_overview_panel_class_init (CcInfoOverviewPanelClass *klass)
   gtk_widget_class_bind_template_child_private (widget_class, CcInfoOverviewPanel, label8);
   gtk_widget_class_bind_template_child_private (widget_class, CcInfoOverviewPanel, grid1);
   gtk_widget_class_bind_template_child_private (widget_class, CcInfoOverviewPanel, label18);
+
+  g_type_ensure (CC_TYPE_HOSTNAME_ENTRY);
 }
 
 static void