[gtk+] css node: Use g_set_object

[Matthias Clasen <matthiasc src gnome org>]

commit 6f5b19a0a534764dad7b8bd0f397a46dc06bef9d
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Dec 18 16:55:21 2015 -0500

    css node: Use g_set_object
    
    Replace unref + assignment + ref combinations by g_set_object_calls.

 gtk/gtkcssnode.c |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)
---
diff --git a/gtk/gtkcssnode.c b/gtk/gtkcssnode.c
index b129c01..fca7de0 100644
--- a/gtk/gtkcssnode.c
+++ b/gtk/gtkcssnode.c
@@ -615,8 +615,7 @@ static void
 gtk_css_node_real_style_changed (GtkCssNode        *cssnode,
                                  GtkCssStyleChange *change)
 {
-  g_object_unref (cssnode->style);
-  cssnode->style = g_object_ref (gtk_css_style_change_get_new_style (change));
+  g_set_object (&cssnode->style, gtk_css_style_change_get_new_style (change));
 }
 
 static void
@@ -998,8 +997,7 @@ gtk_css_node_set_style (GtkCssNode  *cssnode,
            (GTK_IS_CSS_ANIMATED_STYLE (cssnode->style) || GTK_IS_CSS_ANIMATED_STYLE (style)))
     {
       /* This is when animations are starting/stopping but they didn't change any CSS this frame */
-      g_object_unref (cssnode->style);
-      cssnode->style = g_object_ref (style);
+      g_set_object (&cssnode->style, style);
     }
 
   gtk_css_style_change_finish (&change);