[gtk+] GtkBox: Set orientable style classes initially

[Matthias Clasen <matthiasc src gnome org>]

commit b4ab29d4d5e3cd6776b93886ceb0c783dbeeb518
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Jul 18 19:37:33 2014 -0400

    GtkBox: Set orientable style classes initially
    
    This was an omission, horizontal/vertical would only be set
    when the orientation is changed.

 gtk/gtkbox.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkbox.c b/gtk/gtkbox.c
index dcabef1..be1f3f6 100644
--- a/gtk/gtkbox.c
+++ b/gtk/gtkbox.c
@@ -360,6 +360,8 @@ gtk_box_init (GtkBox *box)
   private->spacing = 0;
   private->spacing_set = FALSE;
   private->baseline_pos = GTK_BASELINE_POSITION_CENTER;
+
+  _gtk_orientable_set_style_classes (GTK_ORIENTABLE (box));
 }
 
 static void