From 6d8859f6f66f1090a3e55443dd2bf27688faa6bf Mon Sep 17 00:00:00 2001
From: SteffenBrauns <56578627+SteffenBrauns@users.noreply.github.com>
Date: Mon, 22 May 2023 16:44:59 +0200
Subject: [PATCH] Bugfix NPE in ClientAssociation#close()

Added null check for reportListener
---
 .../iec61850bean/ClientAssociation.java       | 20 ++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/src/main/java/com/beanit/iec61850bean/ClientAssociation.java b/src/main/java/com/beanit/iec61850bean/ClientAssociation.java
index e7dc04a..866ae46 100644
--- a/src/main/java/com/beanit/iec61850bean/ClientAssociation.java
+++ b/src/main/java/com/beanit/iec61850bean/ClientAssociation.java
@@ -2110,15 +2110,17 @@ public final class ClientAssociation {
           closed = true;
           acseAssociation.close();
           lastIOException = e;
-          Thread t1 =
-              new Thread(
-                  new Runnable() {
-                    @Override
-                    public void run() {
-                      reportListener.associationClosed(lastIOException);
-                    }
-                  });
-          t1.start();
+          if (reportListener != null) {
+            Thread t1 =
+                new Thread(
+                    new Runnable() {
+                      @Override
+                      public void run() {
+                        reportListener.associationClosed(lastIOException);
+                      }
+                    });
+            t1.start();
+          }
 
           MMSpdu mmsPdu = new MMSpdu();
           mmsPdu.setConfirmedRequestPDU(new ConfirmedRequestPDU());