[gnome-software] Plug a reference leak

[Matthias Clasen <matthiasc src gnome org>]

commit fe51b4d543bcdeb7201885abc611557c29b432af
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Oct 7 21:55:32 2013 -0400

    Plug a reference leak

 src/gs-screenshot-image.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/src/gs-screenshot-image.c b/src/gs-screenshot-image.c
index 1b7a08a..041bc09 100644
--- a/src/gs-screenshot-image.c
+++ b/src/gs-screenshot-image.c
@@ -207,7 +207,10 @@ gs_screenshot_image_set_screenshot (GsScreenshotImage *ssimg,
        g_return_if_fail (height != 0);
 
        priv = gs_screenshot_image_get_instance_private (ssimg);
-       priv->screenshot = g_object_ref (screenshot);
+        g_object_ref (screenshot);
+       if (priv->screenshot)
+               g_object_unref (priv->screenshot);
+       priv->screenshot = screenshot;
        gtk_widget_set_size_request (priv->box, width, height);
        gtk_widget_set_visible (priv->image, FALSE);