Function ergo::ergo_lib_block_header_transactions_root

#[no_mangle]
pub unsafe extern "C" fn ergo_lib_block_header_transactions_root(
    block_header_ptr: ConstBlockHeaderPtr,
    output: *mut u8
) -> ErrorPtr

Copy the contents of transactions_root field to output. Key assumption: exactly 32 bytes of memory have been allocated at the address pointed-to by output.