--- sys/compat/ndis/kern_windrv.c	2008-11-22 14:40:19.000000000 +0800
+++ /var/current/mysrc/sys/compat/ndis/kern_windrv.c	2008-11-27 18:55:53.000000000 +0800
@@ -878,13 +878,10 @@
 x86_oldldt(dummy)
 	void			*dummy;
 {
-	struct thread		*t;
 	struct x86desc		*gdt;
 	struct gdt		gtable;
 	uint16_t		ltable;
 
-	t = curthread;
-
 	mtx_lock_spin(&dt_lock);
 
 	/* Grab location of existing GDT. */