[gtk+] stylecontext: Don't emit state warning for transient nodes

[Benjamin Otte <otte src gnome org>]

commit 8355ee3053d24c5b5bf39f588ddade83cc96da7e
Author: Benjamin Otte <otte redhat com>
Date:   Wed Dec 2 00:26:16 2015 +0100

    stylecontext: Don't emit state warning for transient nodes
    
    It's fine to call set_state() on those.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=758930

 gtk/gtkstylecontext.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkstylecontext.c b/gtk/gtkstylecontext.c
index 4a5c343..dbaa4d0 100644
--- a/gtk/gtkstylecontext.c
+++ b/gtk/gtkstylecontext.c
@@ -499,7 +499,11 @@ gtk_style_context_push_state (GtkStyleContext *context,
 
   root = gtk_style_context_get_root (context);
 
-  if (GTK_IS_CSS_WIDGET_NODE (root))
+  if (GTK_IS_CSS_TRANSIENT_NODE (priv->cssnode))
+    {
+      /* don't emit a warning, changing state here is fine */
+    }
+  else if (GTK_IS_CSS_WIDGET_NODE (root))
     {
       GtkWidget *widget = gtk_css_widget_node_get_widget (GTK_CSS_WIDGET_NODE (root));
       g_warning ("State %u for %s %p doesn't match state %u set via gtk_style_context_set_state ()",