Function glk::helpers::stream::get_buffer_uni_fallback

pub fn get_buffer_uni_fallback<T: Stream>(
    stream: &mut T, 
    buf_out: &mut [u32]
) -> u32

Fallback implementatino for streams that implement get_buffer but not get_buffer_uni.

• @note Is not a default implementation on the trait to prevent accidental circular recursion.