[gtk+/gtk-3-22] spinbutton: Fix some gadget handling issues

[Matthias Clasen <matthiasc src gnome org>]

commit f8900e5ac46463a6149a94babb328b6c0073bb21
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Nov 10 14:46:21 2016 -0500

    spinbutton: Fix some gadget handling issues
    
    We were not adding the down_button gadget to the parent,
    and we were not unreffing the button gadgets.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=774046

 gtk/gtkspinbutton.c |   10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)
---
diff --git a/gtk/gtkspinbutton.c b/gtk/gtkspinbutton.c
index 9e5e4c7..277fa2b 100644
--- a/gtk/gtkspinbutton.c
+++ b/gtk/gtkspinbutton.c
@@ -813,7 +813,7 @@ gtk_spin_button_init (GtkSpinButton *spin_button)
   gtk_css_gadget_add_class (priv->down_button, "down");
   gtk_css_node_set_parent (gtk_css_gadget_get_node (priv->down_button), widget_node);
   gtk_css_node_set_state (gtk_css_gadget_get_node (priv->down_button), gtk_css_node_get_state (widget_node));
-  gtk_box_gadget_insert_gadget (GTK_BOX_GADGET (priv->gadget), 
+  gtk_box_gadget_insert_gadget (GTK_BOX_GADGET (priv->gadget),
                                 -1, priv->down_button,
                                 FALSE, GTK_ALIGN_FILL);
 
@@ -822,9 +822,9 @@ gtk_spin_button_init (GtkSpinButton *spin_button)
   _gtk_icon_helper_set_use_fallback (GTK_ICON_HELPER (priv->up_button), TRUE);
   _gtk_icon_helper_set_icon_name (GTK_ICON_HELPER (priv->up_button), "list-add-symbolic", 
GTK_ICON_SIZE_MENU);
   gtk_css_gadget_add_class (priv->up_button, "up");
-  gtk_css_node_set_parent (gtk_css_gadget_get_node (priv->down_button), widget_node);
-  gtk_css_node_set_state (gtk_css_gadget_get_node (priv->down_button), gtk_css_node_get_state (widget_node));
-  gtk_box_gadget_insert_gadget (GTK_BOX_GADGET (priv->gadget), 
+  gtk_css_node_set_parent (gtk_css_gadget_get_node (priv->up_button), widget_node);
+  gtk_css_node_set_state (gtk_css_gadget_get_node (priv->up_button), gtk_css_node_get_state (widget_node));
+  gtk_box_gadget_insert_gadget (GTK_BOX_GADGET (priv->gadget),
                                 -1, priv->up_button,
                                 FALSE, GTK_ALIGN_FILL);
 
@@ -853,6 +853,8 @@ gtk_spin_button_finalize (GObject *object)
 
   gtk_spin_button_unset_adjustment (spin_button);
   g_clear_object (&priv->gadget);
+  g_clear_object (&priv->down_button);
+  g_clear_object (&priv->up_button);
 
   g_object_unref (priv->swipe_gesture);