[gtk+] Avoid empty space in the emoji chooser

[Matthias Clasen <matthiasc src gnome org>]

commit d2087f1943605d51cc153657e34754838c62cdee
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Aug 30 08:36:56 2017 -0400

    Avoid empty space in the emoji chooser
    
    We need to hide the empty flow boxes as well, to avoid
    spacing between them.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=786966

 gtk/gtkemojichooser.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkemojichooser.c b/gtk/gtkemojichooser.c
index 302f7d7..c0f6d7a 100644
--- a/gtk/gtkemojichooser.c
+++ b/gtk/gtkemojichooser.c
@@ -444,14 +444,23 @@ static void
 update_headings (GtkEmojiChooser *chooser)
 {
   gtk_widget_set_visible (chooser->people.heading, !chooser->people.empty);
+  gtk_widget_set_visible (chooser->people.box, !chooser->people.empty);
   gtk_widget_set_visible (chooser->body.heading, !chooser->body.empty);
+  gtk_widget_set_visible (chooser->body.box, !chooser->body.empty);
   gtk_widget_set_visible (chooser->nature.heading, !chooser->nature.empty);
+  gtk_widget_set_visible (chooser->nature.box, !chooser->nature.empty);
   gtk_widget_set_visible (chooser->food.heading, !chooser->food.empty);
+  gtk_widget_set_visible (chooser->food.box, !chooser->food.empty);
   gtk_widget_set_visible (chooser->travel.heading, !chooser->travel.empty);
+  gtk_widget_set_visible (chooser->travel.box, !chooser->travel.empty);
   gtk_widget_set_visible (chooser->activities.heading, !chooser->activities.empty);
+  gtk_widget_set_visible (chooser->activities.box, !chooser->activities.empty);
   gtk_widget_set_visible (chooser->objects.heading, !chooser->objects.empty);
+  gtk_widget_set_visible (chooser->objects.box, !chooser->objects.empty);
   gtk_widget_set_visible (chooser->symbols.heading, !chooser->symbols.empty);
+  gtk_widget_set_visible (chooser->symbols.box, !chooser->symbols.empty);
   gtk_widget_set_visible (chooser->flags.heading, !chooser->flags.empty);
+  gtk_widget_set_visible (chooser->flags.box, !chooser->flags.empty);
 
   if (chooser->recent.empty && chooser->people.empty &&
       chooser->body.empty && chooser->nature.empty &&