[gtk+] GtkImage: do not leak metrics in baseline align

[Paolo Borelli <pborelli src gnome org>]

commit d35596fe92f840afe13949c7d5af21623a7aa44d
Author: Paolo Borelli <pborelli gnome org>
Date:   Sat Apr 27 11:08:21 2013 +0200

    GtkImage: do not leak metrics in baseline align
    
    https://bugzilla.gnome.org/show_bug.cgi?id=699020

 gtk/gtkimage.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkimage.c b/gtk/gtkimage.c
index f21f227..61c41b9 100644
--- a/gtk/gtkimage.c
+++ b/gtk/gtkimage.c
@@ -1417,6 +1417,8 @@ gtk_image_get_baseline_align (GtkImage *image)
       image->priv->baseline_align =
        (float)pango_font_metrics_get_ascent (metrics) /
        (pango_font_metrics_get_ascent (metrics) + pango_font_metrics_get_descent (metrics));
+
+      pango_font_metrics_unref (metrics);
     }
 
   return image->priv->baseline_align;