From 5a4fe63383258162c3374aebd048dee87efb4fd6 Mon Sep 17 00:00:00 2001
From: Matthew Jason Benson <mbenson@apache.org>
Date: Tue, 9 Aug 2005 15:30:34 +0000
Subject: [PATCH] Fix comparison w/ exposed NPE PR: 36093 Obtained from: Dave
 Brosius

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@278513 13f79535-47bb-0310-9956-ffa450edef68
---
 src/main/org/apache/tools/ant/taskdefs/SignJar.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/org/apache/tools/ant/taskdefs/SignJar.java b/src/main/org/apache/tools/ant/taskdefs/SignJar.java
index 402469b6b..220aed6b1 100644
--- a/src/main/org/apache/tools/ant/taskdefs/SignJar.java
+++ b/src/main/org/apache/tools/ant/taskdefs/SignJar.java
@@ -447,7 +447,7 @@ public class SignJar extends AbstractJarSignerTask {
      * @return true if the signedjarFile is considered up to date
      */
     protected boolean isUpToDate(File jarFile, File signedjarFile) {
-        if (null == jarFile && !jarFile.exists()) {
+        if (null == jarFile || !jarFile.exists()) {
             //these are pathological cases, but retained in case somebody
             //subclassed us.
             return false;