ddraw/tests: Fix compilation on systems that don't support nameless unions.

[Francois Gouget]

---
 dlls/ddraw/tests/dsurface.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/dlls/ddraw/tests/dsurface.c b/dlls/ddraw/tests/dsurface.c
index 44be603..3c7bde8 100644
--- a/dlls/ddraw/tests/dsurface.c
+++ b/dlls/ddraw/tests/dsurface.c
@@ -3220,7 +3220,7 @@ static void GetDCFormatTest(void)
         ddsd.dwFlags = DDSD_CAPS | DDSD_WIDTH | DDSD_HEIGHT | DDSD_PIXELFORMAT;
         ddsd.dwWidth = 64;
         ddsd.dwHeight = 64;
-        ddsd.ddpfPixelFormat = testdata[i].fmt;
+        U4(ddsd).ddpfPixelFormat = testdata[i].fmt;
         ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN;
 
         hr = IDirectDraw7_CreateSurface(dd7, &ddsd, &surface, NULL);
-- 
1.6.3.3