Re: [PATCH v2 0/2] MR308: vkd3d-shader/hlsl: Initialize all constant values in hlsl_fold_constant_swizzles().

[Francisco Casas (＠fcasas)]

:arrow_up: As an afterthought, I added 2/2 to also initialize the `struct hlsl_constant_value` components to zero in other passes where this issue may also happen.

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https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/308#note_42645