add todo

lib/utils/forkedstoragetrie.js

@@ -41,6 +41,9 @@ ForkedStorageBaseTrie.prototype.get = function(key, blockNumber, callback) {
     }
 
     if (exists) {
+      // TODO: just because we have the key doesn't mean we're at the right
+      // block number/root to send it. We need to check the block number
+      // before using the data in our own trie.
       MerklePatriciaTree.prototype.get.call(self, key, function(err, r) {
         callback(err, r);
       });