From 14186e815e8331b7d6ba8897d808ef09e05bab11 Mon Sep 17 00:00:00 2001
From: Michael Peter Christen <mc@yacy.net>
Date: Thu, 13 Jun 2013 22:42:21 +0200
Subject: [PATCH] npe fix

---
 source/net/yacy/kelondro/blob/Heap.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/net/yacy/kelondro/blob/Heap.java b/source/net/yacy/kelondro/blob/Heap.java
index 3894b48ce..54bf54d8c 100644
--- a/source/net/yacy/kelondro/blob/Heap.java
+++ b/source/net/yacy/kelondro/blob/Heap.java
@@ -377,7 +377,7 @@ public final class Heap extends HeapModifier implements BLOB {
         if (b.length == 0) return true;
         
         // then look if we can use a free entry
-        if (this.free.isEmpty()) return false;
+        if (this.free == null || this.free.isEmpty()) return false;
         
         // find the largest entry
         long lseek = -1;