[gdm] gdm-x-session: set XORG_RUN_AS_USER_OK=1 environment variable

[Ray Strode <halfline src gnome org>]

commit 798a1ad79bdb937c4b0c9008562cd543acaf3206
Author: Ray Strode <rstrode redhat com>
Date:   Fri Mar 27 10:10:54 2015 -0400

    gdm-x-session: set XORG_RUN_AS_USER_OK=1 environment variable
    
    This lets the X server know that it can safely drop privileges.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=746891

 daemon/gdm-x-session.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/daemon/gdm-x-session.c b/daemon/gdm-x-session.c
index dfd6016..3cc7d40 100644
--- a/daemon/gdm-x-session.c
+++ b/daemon/gdm-x-session.c
@@ -222,6 +222,7 @@ spawn_x_server (State        *state,
 
         arguments = g_ptr_array_new ();
         launcher = g_subprocess_launcher_new (G_SUBPROCESS_FLAGS_STDIN_INHERIT);
+        g_subprocess_launcher_setenv (launcher, "XORG_RUN_AS_USER_OK", "1", TRUE);
         g_subprocess_launcher_take_fd (launcher, pipe_fds[1], DISPLAY_FILENO);
 
         if (g_getenv ("XDG_VTNR") != NULL) {