[glibmm] DBusConnection: Check for NULL bus name in the MethodCall callback.

[José Alburquerque <jaalburqu src gnome org>]

commit 7846da750880ac7dde52ba40d7c4cbcbceecbc9e
Author: José Alburquerque <jaalburqu svn gnome org>
Date:   Wed Jan 12 22:49:01 2011 -0500

    DBusConnection: Check for NULL bus name in the MethodCall callback.
    
    	* gio/src/dbusconnection.ccg
    	(DBusConnection_Message_Filter_giomm_callback): Since the sender can
    	be NULL, check for that so that creating a Glib::ustring from a NULL
    	does not cause exceptions.

 ChangeLog                  |    9 +++++++++
 gio/src/dbusconnection.ccg |    3 ++-
 2 files changed, 11 insertions(+), 1 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index b0e4cdd..828ec6b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2011-01-12  José Alburquerque  <jaalburqu svn gnome org>
+
+	DBusConnection: Check for NULL bus name in the MethodCall callback.
+
+	* gio/src/dbusconnection.ccg
+	(DBusConnection_Message_Filter_giomm_callback): Since the sender can
+	be NULL, check for that so that creating a Glib::ustring from a NULL
+	does not cause exceptions.
+
 2.27.91:
 
 2011-01-11  José Alburquerque  <jaalburqu svn gnome org>
diff --git a/gio/src/dbusconnection.ccg b/gio/src/dbusconnection.ccg
index 6073215..a3b47ee 100644
--- a/gio/src/dbusconnection.ccg
+++ b/gio/src/dbusconnection.ccg
@@ -95,7 +95,8 @@ static void DBusInterfaceVTable_MethodCall_giomm_callback(
 
   try
   {
-    (*the_slot)(Glib::wrap(connection, true), Glib::ustring(sender),
+    (*the_slot)(Glib::wrap(connection, true),
+      (sender ? Glib::ustring(sender) : ""),
       Glib::ustring(object_path), Glib::ustring(interface_name),
       Glib::ustring(method_name), Glib::VariantBase(parameters, true),
       Glib::wrap(invocation, true));