[sushi] Fix crasher by initialising threading in X11

[Cosimo Cecchi <cosimoc src gnome org>]

commit 52d5b34ff9674c31109cfb221a93209bdba651f1
Author: Gert Michael Kulyk <gkulyk klio>
Date:   Sun Feb 19 23:01:57 2012 +0100

    Fix crasher by initialising threading in X11

 src/main.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/src/main.c b/src/main.c
index 63797e8..e0f4f31 100644
--- a/src/main.c
+++ b/src/main.c
@@ -37,6 +37,11 @@
 #include <gjs/gjs.h>
 
 #include <gtk/gtk.h>
+
+#ifdef GDK_WINDOWING_X11
+#include <X11/Xlib.h>
+#endif
+
 #include <clutter/clutter.h>
 #include <clutter-gtk/clutter-gtk.h>
 
@@ -141,6 +146,10 @@ main (int argc, char **argv)
   GtkSettings *settings;
   GError *error;
 
+#ifdef GDK_WINDOWING_X11
+  XInitThreads ();
+#endif
+
   clutter_x11_set_use_argb_visual (TRUE);
 
   if (gtk_clutter_init (&argc, &argv) < 0)