From 78cfcac7d0b2ea9efab2abebf07451a77b59c454 Mon Sep 17 00:00:00 2001
From: Nadav Wexler <nadavwe@wix.com>
Date: Sun, 12 Aug 2018 16:29:33 +0300
Subject: [PATCH] return null version on null userAgentString

otherwise you'll get NPE on matching on the version fetcher.
---
 src/main/java/eu/bitwalker/useragentutils/Browser.java | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/main/java/eu/bitwalker/useragentutils/Browser.java b/src/main/java/eu/bitwalker/useragentutils/Browser.java
index 62482eb..8763eb6 100644
--- a/src/main/java/eu/bitwalker/useragentutils/Browser.java
+++ b/src/main/java/eu/bitwalker/useragentutils/Browser.java
@@ -427,6 +427,10 @@ public enum Browser {
 	 * @return Version
 	 */
 	public Version getVersion(String userAgentString) {
+		if (userAgentString == null) {
+			return null;
+		}
+		
 		if (versionFetcher == null) {
 			return getGroup() != this ? getGroup().getVersion(userAgentString) : null;
 		}