Companion for #7671 (child trie deletion host function) (#2077)

* Adapt to new kill_child_storage runtime interface version

* "Update Substrate"

* Update substrate

Co-authored-by: parity-processbot <>

polkadot/parachain/src/wasm_executor/mod.rs

@@ -245,7 +245,7 @@ impl sp_externalities::Externalities for ValidationExternalities {
 		panic!("child_storage: unsupported feature for parachain validation")
 	}
 
-	fn kill_child_storage(&mut self, _: &ChildInfo) {
+	fn kill_child_storage(&mut self, _: &ChildInfo, _: Option<u32>) -> bool {
 		panic!("kill_child_storage: unsupported feature for parachain validation")
 	}