Fix the smp build.

Modified: trunk/reactos/ntoskrnl/ke/i386/ctxswitch.S

--- trunk/reactos/ntoskrnl/ke/i386/ctxswitch.S	2006-01-15 09:23:55 UTC (rev 20887)
+++ trunk/reactos/ntoskrnl/ke/i386/ctxswitch.S	2006-01-15 10:17:35 UTC (rev 20888)
@@ -139,7 +139,7 @@

     mov dword ptr [ebx+KPCR_NPX_THREAD], 0
     test byte ptr [edi+KTHREAD_NPX_STATE], NPX_STATE_DIRTY
     jz 3f

-    cmp dword ptr _FxsrSupport, 0

+    cmp dword ptr _KeI386FxsrPresent, 0

     je 1f
     fxsave [eax-SIZEOF_FX_SAVE_AREA]
     jmp 2f