[at-spi2-core] Add missing return values

[Frédéric Crozat <fcrozat src gnome org>]

commit cfac92cfd9bfb169a45cc351451b63939b459243
Author: Frederic Crozat <fcrozat novell com>
Date:   Tue Feb 1 17:06:26 2011 +0100

    Add missing return values
    
    https://bugzilla.gnome.org/show_bug.cgi?id=641164

 atspi/atspi-misc.c   |    1 +
 registryd/registry.c |   11 ++++++-----
 2 files changed, 7 insertions(+), 5 deletions(-)
---
diff --git a/atspi/atspi-misc.c b/atspi/atspi-misc.c
index dd089b6..9c4bf42 100644
--- a/atspi/atspi-misc.c
+++ b/atspi/atspi-misc.c
@@ -646,6 +646,7 @@ handle_add_accessible (DBusConnection *bus, DBusMessage *message, void *user_dat
 
   dbus_message_iter_init (message, &iter);
   add_accessible_from_iter (&iter);
+  return DBUS_HANDLER_RESULT_HANDLED;
 }
 
 typedef struct
diff --git a/registryd/registry.c b/registryd/registry.c
index 282031f..f40b2f4 100644
--- a/registryd/registry.c
+++ b/registryd/registry.c
@@ -349,7 +349,7 @@ signal_filter (DBusConnection *bus, DBusMessage *message, void *user_data)
   const char *member = dbus_message_get_member (message);
 
   if (type != DBUS_MESSAGE_TYPE_SIGNAL)
-    return;
+    return res;
 
   if (!g_strcmp0(iface, DBUS_INTERFACE_DBUS) &&
       !g_strcmp0(member, "NameOwnerChanged"))
@@ -840,18 +840,18 @@ impl_register_event (DBusConnection *bus, DBusMessage *message, void *user_data)
 
   if (!dbus_message_get_args (message, NULL, DBUS_TYPE_STRING, &orig_name,
     DBUS_TYPE_INVALID))
-    return;
+    return NULL;
 
   name = ensure_proper_format (orig_name);
 
   evdata = (event_data *) g_malloc (sizeof (*evdata));
   if (!evdata)
-    return;
+    return NULL;
   data = g_strsplit (name, ":", 3);
   if (!data)
     {
       g_free (evdata);
-      return;
+      return NULL;
     }
   if (!data [0])
     data [1] = NULL;
@@ -890,7 +890,7 @@ impl_deregister_event (DBusConnection *bus, DBusMessage *message, void *user_dat
 
   if (!dbus_message_get_args (message, NULL, DBUS_TYPE_STRING, &orig_name,
     DBUS_TYPE_INVALID))
-    return;
+    return NULL;
   name = ensure_proper_format (orig_name);
 
   remove_events (registry, sender, name);
@@ -1313,6 +1313,7 @@ handle_method_cache (DBusConnection *bus, DBusMessage *message, void *user_data)
       dbus_connection_send (bus, reply, NULL);
       dbus_message_unref (reply);
     }
+  return result;
 }
 
 static DBusHandlerResult