From ea4e4b888d344817f5e31994ab10431d09982981 Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Mon, 6 Jun 2016 16:56:28 -0700
Subject: [PATCH] fix state cache optimization.

---
 lib/bcoin/chain.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/bcoin/chain.js b/lib/bcoin/chain.js
index 9bbba2f7..1808cc7f 100644
--- a/lib/bcoin/chain.js
+++ b/lib/bcoin/chain.js
@@ -2201,7 +2201,7 @@ Chain.prototype.getState = function getState(prev, id, callback) {
     if (!entry)
       return walkForward(constants.thresholdStates.DEFINED);
 
-    if (self.stateCache[entry.hash])
+    if (self.stateCache[entry.hash] != null)
       return walkForward(self.stateCache[entry.hash]);
 
     return entry.getMedianTimeAsync(function(err, medianTime) {