From 6635ea75ee0c4243d47636f8c4f7b6d7dec6302e Mon Sep 17 00:00:00 2001
From: Peter Johnson <johnson.peter@gmail.com>
Date: Tue, 22 Oct 2019 21:12:07 -0700
Subject: [PATCH] Fix NPE in SendableRegistry.foreachLiveWindow() (#1974)

---
 .../edu/wpi/first/wpilibj/smartdashboard/SendableRegistry.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/wpilibj/src/main/java/edu/wpi/first/wpilibj/smartdashboard/SendableRegistry.java b/wpilibj/src/main/java/edu/wpi/first/wpilibj/smartdashboard/SendableRegistry.java
index c19747ee2a..79b9b2a9f6 100644
--- a/wpilibj/src/main/java/edu/wpi/first/wpilibj/smartdashboard/SendableRegistry.java
+++ b/wpilibj/src/main/java/edu/wpi/first/wpilibj/smartdashboard/SendableRegistry.java
@@ -468,6 +468,9 @@ public class SendableRegistry {
       Consumer<CallbackData> callback) {
     CallbackData cbdata = new CallbackData();
     for (Component comp : components.values()) {
+      if (comp.m_sendable == null) {
+        continue;
+      }
       cbdata.sendable = comp.m_sendable.get();
       if (cbdata.sendable != null && comp.m_liveWindow) {
         cbdata.name = comp.m_name;