From 8773fa2d821acd2f16c196cf41f119ac08080ccb Mon Sep 17 00:00:00 2001
From: Gary Gregory <ggregory@rocketsoftware.com>
Date: Mon, 14 Nov 2022 14:44:50 -0500
Subject: [PATCH] Fix NullPointerException in ElemExtensionCall#execute() when
 an extension jar is missing from the classpath

(cherry picked from commit 663918ab863e98038065a30a8d1738957dd4402d)
---
 .../main/java/org/apache/xalan/templates/ElemExtensionCall.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/echoxsl/src/main/java/org/apache/xalan/templates/ElemExtensionCall.java b/echoxsl/src/main/java/org/apache/xalan/templates/ElemExtensionCall.java
index be69934b9..531f6be96 100644
--- a/echoxsl/src/main/java/org/apache/xalan/templates/ElemExtensionCall.java
+++ b/echoxsl/src/main/java/org/apache/xalan/templates/ElemExtensionCall.java
@@ -211,7 +211,7 @@ public void execute(TransformerImpl transformer)
       transformer.getResultTreeHandler().flushPending();
 
       ExtensionsTable etable = transformer.getExtensionsTable();
-      ExtensionHandler nsh = etable.get(m_extns);
+      ExtensionHandler nsh = etable != null ? etable.get(m_extns) : null;
 
       if (null == nsh)
       {