[gtk+] inspector: Hide the size-groups tab when empty

[Matthias Clasen <matthiasc src gnome org>]

commit 9a84d8a26184557801ab8d1b1276798f02af6f6f
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Nov 8 21:30:12 2014 -0500

    inspector: Hide the size-groups tab when empty

 gtk/inspector/size-groups.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/gtk/inspector/size-groups.c b/gtk/inspector/size-groups.c
index 69d26a2..48e19d2 100644
--- a/gtk/inspector/size-groups.c
+++ b/gtk/inspector/size-groups.c
@@ -282,8 +282,9 @@ gtk_inspector_size_groups_set_object (GtkInspectorSizeGroups *sl,
       return;
     }
 
-  gtk_widget_show (GTK_WIDGET (sl));
   groups = _gtk_widget_get_sizegroups (GTK_WIDGET (object));
+  if (groups)
+    gtk_widget_show (GTK_WIDGET (sl));
   for (l = groups; l; l = l->next)
     {
       GtkSizeGroup *group = l->data;