From 80391805d24ef0e66dc860a147bdd5e03c33e76b Mon Sep 17 00:00:00 2001
From: Gustavo Cortez <cmgustavo83@gmail.com>
Date: Mon, 7 Apr 2014 09:46:08 -0300
Subject: [PATCH] Fix #454: when getting pool information of block 0

---
 lib/BlockDb.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/BlockDb.js b/lib/BlockDb.js
index 0da84e30..0ce250e5 100644
--- a/lib/BlockDb.js
+++ b/lib/BlockDb.js
@@ -166,12 +166,15 @@ BlockDb.prototype.getPoolInfo = function(tx, cb) {
   tDb._getInfo(tx, function(e, a) {
     if (e) return cb(false);
 
-    if (a.isCoinBase) {
+    if (a && a.isCoinBase) {
       var coinbaseHexBuffer = new Buffer(a.vin[0].coinbase, 'hex');
       var aa = self.poolMatch.match(coinbaseHexBuffer);
       
       return cb(aa);
     }
+    else {
+      return cb();
+    }
   });
 };