[PATCH vkd3d 7/8] vkd3d-shader/preproc: Don't add additional spaces after whitespace tokens.

[Zebediah Figura]

Signed-off-by: Zebediah Figura <zfigura at codeweavers.com>

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FWIW, the native preprocessor doesn't emit spaces after newlines, but 
also, the native HLSL compiler is fine with spaces before "preprocessor" 
directives. I have patches in my tree for the latter issue as well.