Fix default_child_storage_get_version_1

[EclesioMeloJunior]

More informations about the error:

• Log line

2023-07-27T11:31:31Z ERROR    block data processing for block with hash 0x03ff62c2f25209593b2fdf87b2206f6b09e5877f76026c7c7fa527b465453f61 failed: processing block data with header and body: handling block: failed to execute block 7165794: running runtime function: wasm error: unreachable

• Stacktrace

2023-07-27T07:31:31.256-04:00 | wasm stack trace:
-- | --
  | 2023-07-27T07:31:31.256-04:00 | .rust_begin_unwind(i32)
  | 2023-07-27T07:31:31.256-04:00 | .core::panicking::panic_fmt::h3ab5417155b7ba3b(i32,i32)
  | 2023-07-27T07:31:31.256-04:00 | .core::result::unwrap_failed::h9bf99bca88ba05dc(i32,i32,i32,i32,i32)
  | 2023-07-27T07:31:31.256-04:00 | .sp_runtime_interface::pass_by::<impl sp_runtime_interface::wasm::FromFFIValue for T>::from_ffi_value::hfd565fd4df947d4f(i32,i64)
  | 2023-07-27T07:31:31.256-04:00 | .sp_io::default_child_storage::extern_host_function_impls::get::h21da8c738e7613fc(i32,i32,i32,i32,i32)
  | 2023-07-27T07:31:31.256-04:00 | .sp_core::crypto::_::<impl parity_scale_codec::codec::Encode for sp_core::crypto::AccountId32>::using_encoded::h5fcfff52f1e9f987(i32,i32,i32)
  | 2023-07-27T07:31:31.256-04:00 | .<polkadot_runtime_common::crowdloan::pallet::Call<T> as frame_support::traits::dispatch::UnfilteredDispatchable>::dispatch_bypass_filter::hc790666693726898(i32,i32,i32)
  | 2023-07-27T07:31:31.256-04:00 | .<westend_runtime::Call as frame_support::traits::dispatch::UnfilteredDispatchable>::dispatch_bypass_filter::heb0da3f3e33b67ca(i32,i32,i32)
  | 2023-07-27T07:31:31.256-04:00 | .<westend_runtime::Call as sp_runtime::traits::Dispatchable>::dispatch::h873b2480955b0374(i32,i32,i32)
  | 2023-07-27T07:31:31.256-04:00 | .pallet_proxy::<impl pallet_proxy::pallet::Pallet<T>>::do_proxy::h7cad1c97c939a9fb(i32,i32,i32)
  | 2023-07-27T07:31:31.256-04:00 | .<pallet_proxy::pallet::Call<T> as frame_support::traits::dispatch::UnfilteredDispatchable>::dispatch_bypass_filter::h40d5d5fad355f593(i32,i32,i32)
  | 2023-07-27T07:31:31.256-04:00 | .<westend_runtime::Call as frame_support::traits::dispatch::UnfilteredDispatchable>::dispatch_bypass_filter::heb0da3f3e33b67ca(i32,i32,i32)
  | 2023-07-27T07:31:31.256-04:00 | .<westend_runtime::Call as sp_runtime::traits::Dispatchable>::dispatch::h873b2480955b0374(i32,i32,i32)
  | 2023-07-27T07:31:31.256-04:00 | .frame_executive::Executive<System,Block,Context,UnsignedValidator,AllPallets,COnRuntimeUpgrade>::apply_extrinsic::hb943e0c0fe4326cd(i32,i32)
  | 2023-07-27T07:31:31.256-04:00 | .Core_execute_block(i32,i32) i64 pkg=sync

2023-08-08T16:53:34Z CRITICAL target=runtime message=panicked at 'Host to wasm values are encoded correctly; qed: Error', /cargo-home/git/checkouts/substrate-7e08433d4c370a21/91061a7/primitives/runtime-interface/src/pass_by.rs:255:38	ext_logging_log_version_1	pkg=runtime module=wazero

The problem is that the pallet is trying to retrieve a value from the host through the default child storage, as the value does not exist in the host the host should return None however Gossamer is returning the value 0 which is causing the problem since the runtime is expecting a Option<Vec<u8>>, to fix that we should return None or []byte{0x00} if we don't find the value