d3dx9_36: make sure return values are used (LLVM/Clang)

[Matteo Bruni]

         hr = IDirect3DTexture9_GetLevelDesc(texture, 0, &desc);
+        ok(hr == D3D_OK, "D3DXCreateTexture returned %#x, expected
%#x\n", hr, D3D_OK);

Copy-paste error, it should be GetLevelDesc in the ok() message. :)