get rid of hidden mutability of Spec

ethcore/pod/src/state.rs

@@ -31,15 +31,19 @@ pub struct PodState(BTreeMap<Address, PodAccount>);
 
 impl PodState {
 	/// Get the underlying map.
-	pub fn get(&self) -> &BTreeMap<Address, PodAccount> { &self.0 }
+	pub fn get(&self) -> &BTreeMap<Address, PodAccount> {
+		&self.0
+	}
 
 	/// Get the root hash of the trie of the RLP of this.
 	pub fn root(&self) -> H256 {
 		sec_trie_root(self.0.iter().map(|(k, v)| (k, v.rlp())))
 	}
 
 	/// Drain object to get the underlying map.
-	pub fn drain(self) -> BTreeMap<Address, PodAccount> { self.0 }
+	pub fn drain(self) -> BTreeMap<Address, PodAccount> {
+		self.0
+	}
 }
 
 impl From<ethjson::blockchain::State> for PodState {

ethcore/src/json_tests/chain.rs

@@ -77,7 +77,6 @@ pub fn json_chain_test<H: FnMut(&str, HookType)>(json_data: &[u8], start_stop_ho
 				let state = From::from(blockchain.pre_state.clone());
 				spec.set_genesis_state(state).expect("Failed to overwrite genesis state");
 				spec.overwrite_genesis_params(genesis);
-				assert!(spec.is_state_root_valid());
 				spec
 			};