[gupnp-av] Fix build warning in gupnp_didl_lite_writer_add_container_child_item

[Jens Georg <jensgeorg src gnome org>]

commit 3a917484f78f335c746238c9d3c66ad047c0cbec
Author: Andreas Henriksson <andreas fatal se>
Date:   Thu Feb 21 15:04:16 2013 +0100

    Fix build warning in gupnp_didl_lite_writer_add_container_child_item
    
    gupnp-didl-lite-writer.c: In function 'gupnp_didl_lite_writer_add_container_child_item':
    gupnp-didl-lite-writer.c:548:22: warning: unused variable 'doc' [-Wunused-variable]
    
    This was introduced when the method was added in commit 71e46f7d
    "Add child item on container in DIDLWriter"

 libgupnp-av/gupnp-didl-lite-writer.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/libgupnp-av/gupnp-didl-lite-writer.c b/libgupnp-av/gupnp-didl-lite-writer.c
index 9ab0654..82da073 100644
--- a/libgupnp-av/gupnp-didl-lite-writer.c
+++ b/libgupnp-av/gupnp-didl-lite-writer.c
@@ -545,7 +545,6 @@ gupnp_didl_lite_writer_add_container_child_item
 {
         xmlNode *item_node, *container_node;
         GUPnPDIDLLiteObject *object;
-        GUPnPXMLDoc *doc;
 
         g_return_val_if_fail (GUPNP_IS_DIDL_LITE_CONTAINER (container), NULL);