From 407b39a2785906f0b1b2ee5e24335efab13cbc89 Mon Sep 17 00:00:00 2001
From: Jean-Baptiste Quenot <jbq@ubleam.com>
Date: Tue, 22 Nov 2016 11:03:42 +0100
Subject: [PATCH] Fix NPE in WebcamDiscoveryService

---
 .../java/com/github/sarxos/webcam/WebcamDiscoveryService.java  | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/webcam-capture/src/main/java/com/github/sarxos/webcam/WebcamDiscoveryService.java b/webcam-capture/src/main/java/com/github/sarxos/webcam/WebcamDiscoveryService.java
index 5c7678e2..d92ee78a 100644
--- a/webcam-capture/src/main/java/com/github/sarxos/webcam/WebcamDiscoveryService.java
+++ b/webcam-capture/src/main/java/com/github/sarxos/webcam/WebcamDiscoveryService.java
@@ -381,6 +381,9 @@ protected void shutdown() {
 
 		stop();
 
+		if (webcams == null)
+			return;
+
 		// dispose all webcams
 
 		Iterator<Webcam> wi = webcams.iterator();