[dx41] fix dx39

[Ann and Jason Edmeades <us@the-edmeades.demon.co.uk>]

Spot the deliberate mistake...

Changelog
Ensure I fill in the stencilfunc so I can query it later!
Jason

--- dlls/d3d8/device.dx40	2003-05-24 17:37:33.000000000 +0100
+++ dlls/d3d8/device.c	2003-05-24 22:27:21.000000000 +0100
@@ -3343,6 +3343,7 @@
                FIXME("Unrecognized/Unhandled D3DCMPFUNC value %ld\n", Value);
            }
            TRACE("glStencilFunc with Parm=%x, ref=%d, mask=%x\n", glParm, ref, mask);
+           This->stencilfunc = glParm;
            glStencilFunc(glParm, ref, mask);
            checkGLcall("glStencilFunc");
         }