[gdm/gnome-2-30] Fix #630484, set SIGPIPE handler to default before starting Xsession.

[Brian Cameron <bcameron src gnome org>]

commit 7196e4330acfa525361447ba986bd8cab1494a12
Author: Brian Cameron <brian cameron oracle com>
Date:   Thu Apr 7 12:06:45 2011 -0500

    Fix #630484, set SIGPIPE handler to default before starting Xsession.

 daemon/gdm-session-worker.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/daemon/gdm-session-worker.c b/daemon/gdm-session-worker.c
index 9470824..f8ba4ba 100644
--- a/daemon/gdm-session-worker.c
+++ b/daemon/gdm-session-worker.c
@@ -2070,6 +2070,13 @@ gdm_session_worker_start_user_session (GdmSessionWorker  *worker,
 
                 _save_user_settings (worker, home_dir);
 
+                /*
+                 * Reset SIGPIPE to default so that any process in the user
+                 * session get the default SIGPIPE behavior instead of ignoring
+                 * SIGPIPE.
+                 */
+                signal (SIGPIPE, SIG_DFL);
+
                 gdm_session_execute (worker->priv->arguments[0],
                                      worker->priv->arguments,
                                      environment,