[gtk+] icon helper: Properly update on style change

[Matthias Clasen <matthiasc src gnome org>]

commit 7382f3c347ffa224b8f1530f532bea01dee6cb4a
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Mar 4 08:50:52 2016 -0500

    icon helper: Properly update on style change
    
    A GtkCssChange of NULL means 'everything changed!'.

 gtk/gtkiconhelper.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/gtk/gtkiconhelper.c b/gtk/gtkiconhelper.c
index c03c487..212eef9 100644
--- a/gtk/gtkiconhelper.c
+++ b/gtk/gtkiconhelper.c
@@ -69,11 +69,11 @@ gtk_icon_helper_invalidate_for_change (GtkIconHelper     *self,
 {
   GtkIconHelperPrivate *priv = self->priv;
 
-  if (change &&
+  if (change == NULL ||
       ((gtk_css_style_change_affects (change, GTK_CSS_AFFECTS_SYMBOLIC_ICON) &&
         priv->rendered_surface_is_symbolic) ||
-      (gtk_css_style_change_affects (change, GTK_CSS_AFFECTS_ICON) &&
-       !priv->rendered_surface_is_symbolic)))
+       (gtk_css_style_change_affects (change, GTK_CSS_AFFECTS_ICON) &&
+        !priv->rendered_surface_is_symbolic)))
     {
       gtk_icon_helper_invalidate (self);
     }