Function btck_block_validation_state_copy 

pub unsafe extern "C" fn btck_block_validation_state_copy(
    block_validation_state: *const btck_BlockValidationState,
) -> *mut btck_BlockValidationState

@brief Copies the btck_BlockValidationState.

@param[in] block_validation_state Non-null. @return The copied btck_BlockValidationState.