[gtk+] icon-helper: don't warn out when the icon size is GTK_ICON_SIZE_INVALID

[Cosimo Cecchi <cosimoc src gnome org>]

commit d300ddc5e49f14c42cf9fb1a897899fb65b91da9
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Wed Nov 30 18:32:01 2011 -0500

    icon-helper: don't warn out when the icon size is GTK_ICON_SIZE_INVALID
    
    We can call ensure_icon_size() for an empty image; don't warn out in
    that case, but just return a zero width.

 gtk/gtkiconhelper.c |   11 +++++++++--
 1 files changed, 9 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkiconhelper.c b/gtk/gtkiconhelper.c
index 46724f9..063b7a8 100644
--- a/gtk/gtkiconhelper.c
+++ b/gtk/gtkiconhelper.c
@@ -128,8 +128,15 @@ ensure_icon_size (GtkIconHelper *self,
 					       self->priv->icon_size,
 					       &width, &height))
     {
-      g_warning ("Invalid icon size %d\n", self->priv->icon_size);
-      width = height = 24;
+      if (self->priv->icon_size == GTK_ICON_SIZE_INVALID)
+        {
+          width = height = 0;
+        }
+      else
+        {
+          g_warning ("Invalid icon size %d\n", self->priv->icon_size);
+          width = height = 24;
+        }
     }
 
   *width_out = width;