Index: libs/libmythtv/vsync.cpp
===================================================================
--- libs/libmythtv/vsync.cpp	(revision 7631)
+++ libs/libmythtv/vsync.cpp	(working copy)
@@ -434,7 +434,7 @@
     if (m_display)
     {
         if (m_context)
-            glXDestroyContext(m_display, m_context);
+            X11S(glXDestroyContext(m_display, m_context));
         if (m_drawable)
             X11S(XDestroyWindow(m_display, m_drawable));
         X11S(XCloseDisplay(m_display));