Ensure Spec::ensure_db_good() places DB entries for code & storage.

util/src/trie/sectriedbmut.rs

@@ -25,6 +25,12 @@ impl<'db> SecTrieDBMut<'db> {
 	pub fn from_existing(db: &'db mut HashDB, root: &'db mut H256) -> Self {
 		SecTrieDBMut { raw: TrieDBMut::from_existing(db, root) }
 	}
+
+	/// Get the backing database.
+	pub fn db(&'db self) -> &'db HashDB { self.raw.db() }
+
+	/// Get the backing database.
+	pub fn db_mut(&'db mut self) -> &'db mut HashDB { self.raw.db_mut() }
 }
 
 impl<'db> Trie for SecTrieDBMut<'db> {

util/src/trie/triedbmut.rs

@@ -87,6 +87,11 @@ impl<'db> TrieDBMut<'db> {
 		self.db 
 	}
 
+	/// Get the backing database.
+	pub fn db_mut(&'db mut self) -> &'db mut HashDB { 
+		self.db 
+	}
+
 	/// Determine all the keys in the backing database that belong to the trie.
 	pub fn keys(&self) -> Vec<H256> {
 		let mut ret: Vec<H256> = Vec::new();