[folks] Fix return types and documentation for a tp-lowlevel.c method

[Philip Withnall <pwithnall src gnome org>]

commit 237d196f4ab0693e5132ddc1a27a48d61fc0ce44
Author: Philip Withnall <philip tecnocode co uk>
Date:   Sat Nov 27 21:17:56 2010 +0000

    Fix return types and documentation for a tp-lowlevel.c method
    
    folks_tp_lowlevel_connection_get_requestable_channel_classes_finish() had
    incorrect return values in assertion failure conditions, and the
    documentation said to use the wrong function to free its return value.

 backends/telepathy/lib/tp-lowlevel.c |   13 +++++++------
 1 files changed, 7 insertions(+), 6 deletions(-)
---
diff --git a/backends/telepathy/lib/tp-lowlevel.c b/backends/telepathy/lib/tp-lowlevel.c
index 9d964d8..834e167 100644
--- a/backends/telepathy/lib/tp-lowlevel.c
+++ b/backends/telepathy/lib/tp-lowlevel.c
@@ -475,8 +475,8 @@ folks_tp_lowlevel_connection_get_requestable_channel_classes_async (
  *
  * Retrieve the #TpConnection's RequestableChannelClasses D-Bus property.
  *
- * Returns: (transfer full): the boxed property details. Free with
- * g_boxed_free().
+ * Returns: (transfer full): the boxed property details. Unref with
+ * g_ptr_array_unref().
  */
 GPtrArray *
 folks_tp_lowlevel_connection_get_requestable_channel_classes_finish (
@@ -487,17 +487,18 @@ folks_tp_lowlevel_connection_get_requestable_channel_classes_finish (
   GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
   TpConnection *conn;
 
-  g_return_val_if_fail (G_IS_SIMPLE_ASYNC_RESULT (simple), FALSE);
+  g_return_val_if_fail (G_IS_SIMPLE_ASYNC_RESULT (simple), NULL);
 
   conn = TP_CONNECTION (g_async_result_get_source_object (result));
-  g_return_val_if_fail (TP_IS_CONNECTION (conn), FALSE);
+  g_return_val_if_fail (TP_IS_CONNECTION (conn), NULL);
 
   if (g_simple_async_result_propagate_error (simple, error))
-    return 0;
+    return NULL;
 
   g_return_val_if_fail (g_simple_async_result_is_valid (result,
       G_OBJECT (conn),
-      folks_tp_lowlevel_connection_get_requestable_channel_classes_finish), 0);
+      folks_tp_lowlevel_connection_get_requestable_channel_classes_finish),
+      NULL);
 
   return g_simple_async_result_get_op_res_gpointer (
       G_SIMPLE_ASYNC_RESULT (result));