[cogl/wip/release-1.7.4: 1/7] x11: don't try and close a NULL display

[Robert Bragg <rbragg src gnome org>]

commit 1144a05bfd57e925ef4280b7c0272cb2aed34689
Author: Robert Bragg <robert linux intel com>
Date:   Tue Jul 19 19:46:37 2011 +0100

    x11: don't try and close a NULL display
    
    If we failed to open an X display then don't later try and close a NULL
    display resulting in a crash.

 cogl/cogl-xlib-renderer.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/cogl/cogl-xlib-renderer.c b/cogl/cogl-xlib-renderer.c
index 03a822b..8b4d3cc 100644
--- a/cogl/cogl-xlib-renderer.c
+++ b/cogl/cogl-xlib-renderer.c
@@ -181,7 +181,7 @@ _cogl_xlib_renderer_disconnect (CoglRenderer *renderer)
 {
   CoglXlibRenderer *xlib_renderer = renderer->winsys;
 
-  if (!renderer->foreign_xdpy)
+  if (!renderer->foreign_xdpy && xlib_renderer->xdpy)
     XCloseDisplay (xlib_renderer->xdpy);
 
   unregister_xlib_renderer (renderer);