[gupnp-av/wip/didl-lite-fragments: 13/19] Error fixes.

[Krzesimir Nowak <krnowak src gnome org>]

commit 297b2215b0d3dce07299a2be70131376b50c4913
Author: Krzesimir Nowak <krnowak openismus com>
Date:   Mon Oct 22 15:08:19 2012 +0200

    Error fixes.

 libgupnp-av/gupnp-didl-lite-object.c |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/libgupnp-av/gupnp-didl-lite-object.c b/libgupnp-av/gupnp-didl-lite-object.c
index 12ee94a..e040812 100644
--- a/libgupnp-av/gupnp-didl-lite-object.c
+++ b/libgupnp-av/gupnp-didl-lite-object.c
@@ -3046,9 +3046,9 @@ gupnp_didl_lite_object_apply_fragments (GUPnPDIDLLiteObject  *object,
         g_return_val_if_fail (GUPNP_IS_DIDL_LITE_OBJECT (object),
                               GUPNP_DIDL_LITE_FRAGMENT_RESULT_UNKNOWN_ERROR);
         g_return_val_if_fail (current_fragments != NULL,
-                              GUPNP_DIDL_LITE_FRAGMENT_RESULT_UNKNOWN_ERROR);
+                              GUPNP_DIDL_LITE_FRAGMENT_RESULT_CURRENT_INVALID);
         g_return_val_if_fail (new_fragments != NULL,
-                              GUPNP_DIDL_LITE_FRAGMENT_RESULT_UNKNOWN_ERROR);
+                              GUPNP_DIDL_LITE_FRAGMENT_RESULT_NEW_INVALID);
 
         vdata = get_xsd_validate_data ();
 
@@ -3068,6 +3068,11 @@ gupnp_didl_lite_object_apply_fragments (GUPnPDIDLLiteObject  *object,
                 goto out;
         }
 
+        if (!current_size) {
+                result = GUPNP_DIDL_LITE_FRAGMENT_RESULT_CURRENT_INVALID;
+                goto out;
+        }
+
         original.doc = object->priv->xml_doc->doc;
         original.node = object->priv->xml_node;
         modified.doc = xmlCopyDoc (original.doc, 1);