[gtk+] combobox: Make wrap-width and grid mode work again

[Daniel Boles <dboles src gnome org>]

commit c790724469942adc1dfb906dbdc68ee28ccb3b33
Author: Daniel Boles <dboles src gnome org>
Date:   Thu Jan 19 21:23:51 2017 +0000

    combobox: Make wrap-width and grid mode work again
    
    Commit fdc0c6426b6fb751653f3a8536a344f69a6407ac for removing (partly!)
    appears-as-list also deleted the code that propagated wrap-width to the
    TreeMenu and thus put us into “grid mode”. This restores that code.
    
    And as Benjamin noted, calling check_appearance() here is wrong, so bye.

 gtk/gtkcombobox.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkcombobox.c b/gtk/gtkcombobox.c
index 3fb8222..4ca31f4 100644
--- a/gtk/gtkcombobox.c
+++ b/gtk/gtkcombobox.c
@@ -2775,7 +2775,8 @@ gtk_combo_box_set_wrap_width (GtkComboBox *combo_box,
     {
       priv->wrap_width = width;
 
-      gtk_combo_box_check_appearance (combo_box);
+      if (GTK_IS_TREE_MENU (priv->popup_widget))
+        _gtk_tree_menu_set_wrap_width (GTK_TREE_MENU (priv->popup_widget), priv->wrap_width);
 
       g_object_notify (G_OBJECT (combo_box), "wrap-width");
     }