fix/compile: missing shared:: prefix

frame/session/src/historical/offchain.rs

@@ -46,7 +46,7 @@ impl<T: Trait> ValidatorSet<T> {
 	/// If none is found or decodable given `prefix` and `session`, it will return `None`.
 	/// Empty validator sets should only ever exist for genesis blocks.
 	pub fn load_from_offchain_db(session_index: SessionIndex) -> Option<Self> {
-		let derived_key = shared::derive_key(PREFIX, session_index);
+		let derived_key = shared::derive_key(shared::PREFIX, session_index);
 		StorageValueRef::persistent(derived_key.as_ref())
 			.get::<Vec<(T::ValidatorId, T::FullIdentification)>>()
 			.flatten()
@@ -69,7 +69,7 @@ impl<T: Trait> ValidatorSet<T> {
 	/// than the stored one, in which case the conservative choice is made to keep records
 	/// up to the one that is the lesser.
 	pub fn prune_older_than(first_to_keep: SessionIndex) {
-		let derived_key = LAST_PRUNE.to_vec();
+		let derived_key = shared::LAST_PRUNE.to_vec();
 		let entry = StorageValueRef::persistent(derived_key.as_ref());
 		match entry.mutate(|current: Option<Option<SessionIndex>>| -> Result<_, ()> {
 			match current {
@@ -87,7 +87,7 @@ impl<T: Trait> ValidatorSet<T> {
 				// on a re-org this is not necessarily true, with the above they might be equal
 				if new_value < first_to_keep {
 					for session_index in new_value..first_to_keep {
-						let derived_key = shared::derive_key(PREFIX, session_index);
+						let derived_key = shared::derive_key(shared::PREFIX, session_index);
 						let _ = StorageValueRef::persistent(derived_key.as_ref()).clear();
 					}
 				}