SDL_malloc alignment properties unspecified in documentation

[Beyley]

SDL3's documentation does not specify a minimum alignment of SDL_malloc, implying it could return data with no guaranteed alignment, meaning there's many cases like SDL_ConvertAudioSamples where the returned pointer by SDL cannot be trivially casted to a it's true data type (eg. if im telling SDL to resample to f32 audio, I cannot safely cast the u8* (natural alignment 1) pointer SDL gives me to an f32* (natural alignment 4), which seems like an oversight).

If SDL_malloc should always return at least some minimum of alignment for its data, this should be documented, else, places like SDL_ConvertAudioSamples should be changed to allocate aligned memory themselves.