[gdm] Fix bug #603756, ensure runtime dir is always set.

[Brian Cameron <bcameron src gnome org>]

commit d1acb1fc4dbf90afc4447f221ba864f6dc3d8370
Author: Brian Cameron <Brian Cameron sun com>
Date:   Fri Dec 4 18:42:11 2009 -0600

    Fix bug #603756, ensure runtime dir is always set.

 daemon/gdm-welcome-session.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/daemon/gdm-welcome-session.c b/daemon/gdm-welcome-session.c
index f340660..e113808 100644
--- a/daemon/gdm-welcome-session.c
+++ b/daemon/gdm-welcome-session.c
@@ -503,6 +503,7 @@ static gboolean
 spawn_command_line_sync_as_user (const char *command_line,
                                  const char *user_name,
                                  const char *group_name,
+                                 const char *runtime_dir,
                                  const char *log_file,
                                  char       **env,
                                  char       **std_output,
@@ -528,6 +529,7 @@ spawn_command_line_sync_as_user (const char *command_line,
 
         data.user_name = user_name;
         data.group_name = group_name;
+        data.runtime_dir = runtime_dir;
         data.log_file = log_file;
 
         local_error = NULL;
@@ -703,6 +705,7 @@ start_dbus_daemon (GdmWelcomeSession *welcome_session)
         res = spawn_command_line_sync_as_user (DBUS_LAUNCH_COMMAND,
                                                welcome_session->priv->user_name,
                                                welcome_session->priv->group_name,
+                                               welcome_session->priv->runtime_dir,
                                                NULL, /* log file */
                                                (char **)env->pdata,
                                                &std_out,