From f5cd8a8dcf22434248ffb0196dfed5a7e57191b9 Mon Sep 17 00:00:00 2001
From: Yossi Farjoun <farjoun@gmail.com>
Date: Fri, 26 May 2017 16:31:57 -0400
Subject: [PATCH] - fixed a small NPE in MD5CalculatingOutputStream

---
 src/main/java/htsjdk/samtools/util/Md5CalculatingOutputStream.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/htsjdk/samtools/util/Md5CalculatingOutputStream.java b/src/main/java/htsjdk/samtools/util/Md5CalculatingOutputStream.java
index f3b3f0779..8b4c643a3 100755
--- a/src/main/java/htsjdk/samtools/util/Md5CalculatingOutputStream.java
+++ b/src/main/java/htsjdk/samtools/util/Md5CalculatingOutputStream.java
@@ -68,7 +68,7 @@ public Md5CalculatingOutputStream(OutputStream os, Path digestFile) {
     }
 
     public Md5CalculatingOutputStream(OutputStream os, File digestFile) {
-        this(os, digestFile.toPath());
+        this(os, digestFile == null ? (Path) null : digestFile.toPath());
     }
 
     @Override