From 47d8101ce89327ec0a2ed6e7abc19e092d627dc3 Mon Sep 17 00:00:00 2001
From: 0xboobface <0xboobface@gmail.com>
Date: Mon, 17 Dec 2018 15:21:36 +0100
Subject: [PATCH] Avoid NPE in onError

---
 client/src/main/java/ctbrec/ui/controls/StreamPreview.java | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/client/src/main/java/ctbrec/ui/controls/StreamPreview.java b/client/src/main/java/ctbrec/ui/controls/StreamPreview.java
index 2dd21c52..a7b5911f 100644
--- a/client/src/main/java/ctbrec/ui/controls/StreamPreview.java
+++ b/client/src/main/java/ctbrec/ui/controls/StreamPreview.java
@@ -3,6 +3,7 @@ package ctbrec.ui.controls;
 import java.io.InterruptedIOException;
 import java.util.Collections;
 import java.util.List;
+import java.util.Optional;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
@@ -161,8 +162,9 @@ public class StreamPreview extends StackPane {
 
     private void onError(MediaPlayer videoPlayer) {
         LOG.error("Error while starting preview stream", videoPlayer.getError());
-        if(videoPlayer.getError().getCause() != null) {
-            LOG.error("Error while starting preview stream root cause:", videoPlayer.getError().getCause());
+        Optional<Throwable> cause = Optional.ofNullable(videoPlayer).map(v -> v.getError()).map(e -> e.getCause());
+        if(cause.isPresent()) {
+            LOG.error("Error while starting preview stream root cause:", cause.get());
         }
         showTestImage();
     }