[gdm] Fix .xsession-errors.old

[Ray Strode <halfline src gnome org>]

commit cdccccfe80578b801121fa66870239d9fcd7390a
Author: Edward Sheldrake <ejsheldrake gmail com>
Date:   Tue Oct 4 20:49:19 2011 +0100

    Fix .xsession-errors.old
    
    Fix moving previous ~/.xsession-errors file to ~/.xsession-errors.old
    at login, by fixing use after free of "home_dir" variable.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=660921

 daemon/gdm-session-worker.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/daemon/gdm-session-worker.c b/daemon/gdm-session-worker.c
index 45a06ce..578f694 100644
--- a/daemon/gdm-session-worker.c
+++ b/daemon/gdm-session-worker.c
@@ -1872,7 +1872,6 @@ gdm_session_worker_start_session (GdmSessionWorker  *worker,
                 if ((home_dir == NULL) || g_chdir (home_dir) < 0) {
                         g_chdir ("/");
                 }
-                g_free (home_dir);
 
                 fd = open ("/dev/null", O_RDWR);
                 dup2 (fd, STDIN_FILENO);
@@ -1883,6 +1882,7 @@ gdm_session_worker_start_session (GdmSessionWorker  *worker,
                 } else {
                         fd = _open_user_session_log (home_dir);
                 }
+                g_free (home_dir);
                 dup2 (fd, STDOUT_FILENO);
                 dup2 (fd, STDERR_FILENO);
                 close (fd);