[PATCH vkd3d 4/5] vkd3d-shader: Avoid using debugging utilities in hlsl_debug_modifiers().

[Matteo Bruni]

Signed-off-by: Matteo Bruni <mbruni at codeweavers.com>
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There's the alternative of using and passing around a
vkd3d_string_buffer instead. This also works though.