--- xc/programs/Xserver/GL/mesa/src/X/xf86glx.c     2002-12-17 06:03:24.000000000 +0100
+++ xc/programs/Xserver/GL/mesa/src/X/xf86glx.c 2003-12-30 12:22:34.000000000 +0100
@@ -768,7 +768,6 @@
 {
     XMesaContext xmesa = (XMesaContext) gc->DriverCtx;
     MESA_CC = NULL;
-    __glXLastContext = NULL;
     return XMesaLoseCurrent(xmesa);
 }