ddraw: Correct WINED3DFMT_X8D24_UNORM.

dlls/ddraw/utils.c

diff --git a/dlls/ddraw/utils.c b/dlls/ddraw/utils.c
index b4b9dab..94e4ac0 100644
--- a/dlls/ddraw/utils.c
+++ b/dlls/ddraw/utils.c
@@ -228,7 +228,7 @@
             DDPixelFormat->dwFourCC = 0;
             DDPixelFormat->u1.dwZBufferBitDepth = 32;
             DDPixelFormat->u2.dwStencilBitDepth = 0;
-            DDPixelFormat->u3.dwZBitMask = 0x00FFFFFFFF;
+            DDPixelFormat->u3.dwZBitMask = 0x00FFFFFF;
             DDPixelFormat->u4.dwStencilBitMask = 0x00000000;
             DDPixelFormat->u5.dwRGBAlphaBitMask = 0x0;
             break;