1394: Sink the clock reference in the constructor

This is now needed as GstClock does not do that internally anymore,
because that broke bindings.

https://bugzilla.gnome.org/show_bug.cgi?id=743062

ext/raw1394/gst1394clock.c

@@ -100,6 +100,9 @@ gst_1394_clock_new (const gchar * name)
       GST_1394_CLOCK (g_object_new (GST_TYPE_1394_CLOCK, "name", name,
           "clock-type", GST_CLOCK_TYPE_OTHER, NULL));
 
+  /* Clear floating flag */
+  gst_object_ref_sink (_1394clock);
+
   return _1394clock;
 }