pallets: implement Default for GenesisConfig in no_std (#7271)

* pallets: implement Default for GenesisConfig in no_std

This change is follow-up of: https://github.com/paritytech/substrate/pull/14108

It is a step towards: https://github.com/paritytech/substrate/issues/13334

* Cargo.lock updated

* update lockfile for {"substrate"}

---------

Co-authored-by: parity-processbot <>

polkadot/runtime/parachains/src/configuration.rs

@@ -19,7 +19,7 @@
 //! Configuration can change only at session boundaries and is buffered until then.
 
 use crate::{inclusion::MAX_UPWARD_MESSAGE_SIZE_BOUND, shared};
-use frame_support::pallet_prelude::*;
+use frame_support::{pallet_prelude::*, DefaultNoBound};
 use frame_system::pallet_prelude::*;
 use parity_scale_codec::{Decode, Encode};
 use polkadot_parachain::primitives::{MAX_HORIZONTAL_MESSAGE_NUM, MAX_UPWARD_MESSAGE_NUM};
@@ -525,17 +525,11 @@ pub mod pallet {
 	pub(crate) type BypassConsistencyCheck<T: Config> = StorageValue<_, bool, ValueQuery>;
 
 	#[pallet::genesis_config]
+	#[derive(DefaultNoBound)]
 	pub struct GenesisConfig<T: Config> {
 		pub config: HostConfiguration<T::BlockNumber>,
 	}
 
-	#[cfg(feature = "std")]
-	impl<T: Config> Default for GenesisConfig<T> {
-		fn default() -> Self {
-			GenesisConfig { config: Default::default() }
-		}
-	}
-
 	#[pallet::genesis_build]
 	impl<T: Config> GenesisBuild<T> for GenesisConfig<T> {
 		fn build(&self) {