From c995dde98c23b5ae1fe49261d48c7d7ce2618d7f Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Sun, 12 Jun 2016 12:13:03 +1200
Subject: Protect against missing group

---
 src/org/traccar/database/GroupTree.java | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'src/org')

diff --git a/src/org/traccar/database/GroupTree.java b/src/org/traccar/database/GroupTree.java
index 4a2321f58..9062e7aa8 100644
--- a/src/org/traccar/database/GroupTree.java
+++ b/src/org/traccar/database/GroupTree.java
@@ -140,9 +140,11 @@ public class GroupTree {
     }
 
     private void getNodes(Set<TreeNode> results, TreeNode node) {
-        for (TreeNode child : node.getChildren()) {
-            results.add(child);
-            getNodes(results, child);
+        if (node != null) {
+            for (TreeNode child : node.getChildren()) {
+                results.add(child);
+                getNodes(results, child);
+            }
         }
     }
 
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