[gupnp] Prevent dangling pointer

[Jens Georg <jensgeorg src gnome org>]

commit bb6fbdd3272de42a2621adf563b60abc6960f235
Author: Jens Georg <mail jensge org>
Date:   Sun May 25 09:44:21 2014 +0200

    Prevent dangling pointer
    
    Regression introduced with 8abfa8082997bf59cd20aba2bd86de0eb3f88279
    
     - _dispose might be called multiple times, so g_list_free_full might have
       been called on an already freed list
     - emit_notifications left a dangling pointer which caused _dispose to crash
    
    Signed-off-by: Jens Georg <mail jensge org>

 libgupnp/gupnp-service-proxy.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/libgupnp/gupnp-service-proxy.c b/libgupnp/gupnp-service-proxy.c
index 0d8868a..d1d1c6a 100644
--- a/libgupnp/gupnp-service-proxy.c
+++ b/libgupnp/gupnp-service-proxy.c
@@ -296,6 +296,7 @@ gupnp_service_proxy_dispose (GObject *object)
 
         g_list_free_full (proxy->priv->pending_notifies,
                           (GDestroyNotify) emit_notify_data_free);
+        proxy->priv->pending_notifies = NULL;
 
         /* Call super */
         object_class = G_OBJECT_CLASS (gupnp_service_proxy_parent_class);
@@ -1865,6 +1866,7 @@ emit_notifications (gpointer user_data)
         /* Cleanup */
         g_list_free_full (proxy->priv->pending_notifies,
                           (GDestroyNotify) emit_notify_data_free);
+        proxy->priv->pending_notifies = NULL;
 
         proxy->priv->notify_idle_src = NULL;