dxva2-Video_Decoder: Use a bigger estimation for the maximum slice size (required for some HD videos).

patches/dxva2-Video_Decoder/0008-dxva2-Implement-h264-decoder.patch

@@ -88,7 +88,7 @@ index 0000000..1a5817e
 +
 +static inline UINT estimate_maximum_slice_size( UINT width, UINT height )
 +{
-+    return (2 * width * height * min(width, height)) / max(width, height);
++    return (3 * width * height * min(width, height)) / max(width, height);
 +}
 +
 +typedef struct