[grilo] net: Check object before increasing refcount

[Juan A. Suarez Romero <jasuarez src gnome org>]

commit a7cf2bd82c88d7f10213b05128e933afaf7b75d4
Author: Juan A. Suarez Romero <jasuarez igalia com>
Date:   Tue Nov 18 18:49:56 2014 +0000

    net: Check object before increasing refcount
    
    Check if object is non-NULL before increasing its reference count.
    
    Fixes e823b8fe63846a9c60ebd59a8bf07e9c602a8528.

 libs/net/grl-net-wc.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libs/net/grl-net-wc.c b/libs/net/grl-net-wc.c
index d3ff7b8..b513199 100644
--- a/libs/net/grl-net-wc.c
+++ b/libs/net/grl-net-wc.c
@@ -773,7 +773,7 @@ get_url (GrlNetWc *self,
   c->url = g_strdup (url);
   c->headers = headers? g_hash_table_ref (headers): NULL;
   c->result = result;
-  c->cancellable = g_object_ref (cancellable);
+  c->cancellable = cancellable ? g_object_ref (cancellable) : NULL;
 
   g_get_current_time (&now);