[gtk+] headerbar: Don't underallocate the label box

[Timm Bäder <baedert src gnome org>]

commit 58891c1fe5f10f9823a8b61f4df1a1db9c0fd479
Author: Timm Bäder <mail baedert org>
Date:   Sat Apr 2 16:20:09 2016 +0200

    headerbar: Don't underallocate the label box
    
    We use a label_sizing_box to make sure the headerbar can always contain
    both a title and a subtitle without resizing when showing/hiding either
    of them, but we should only do that for the height; the min width of the
    label_box can be larger than that of the label_sizing_box.

 gtk/gtkheaderbar.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkheaderbar.c b/gtk/gtkheaderbar.c
index 819fc4a..ee7a34c 100644
--- a/gtk/gtkheaderbar.c
+++ b/gtk/gtkheaderbar.c
@@ -646,7 +646,12 @@ gtk_header_bar_get_size (GtkWidget      *widget,
   center_min = center_nat = 0;
   if (priv->label_box != NULL)
     {
-      if (add_child_size (priv->label_sizing_box, orientation, &center_min, &center_nat))
+      if (orientation == GTK_ORIENTATION_HORIZONTAL)
+        add_child_size (priv->label_box, orientation, &center_min, &center_nat);
+      else
+        add_child_size (priv->label_sizing_box, orientation, &center_min, &center_nat);
+
+      if (_gtk_widget_get_visible (priv->label_sizing_box))
         nvis_children += 1;
     }