From 44af2613da02497df06c9cba74f4605340ab3077 Mon Sep 17 00:00:00 2001
From: Thinkofdeath <thinkofdeath@spigotmc.org>
Date: Wed, 10 Jun 2015 16:21:17 +0100
Subject: Fix a null pointer issue with getenv

---
 src/main/java/org/spigotmc/builder/Builder.java | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/main/java/org/spigotmc/builder/Builder.java b/src/main/java/org/spigotmc/builder/Builder.java
index 810cf3c..0549cd8 100644
--- a/src/main/java/org/spigotmc/builder/Builder.java
+++ b/src/main/java/org/spigotmc/builder/Builder.java
@@ -171,8 +171,9 @@ public class Builder
             clone( "https://hub.spigotmc.org/stash/scm/spigot/builddata.git", buildData );
         }
 
-        File maven = new File( System.getenv( "M2_HOME" ) );
-        if ( !maven.exists() )
+        File maven;
+        String m2Home = System.getenv( "M2_HOME" );
+        if ( m2Home == null || !(maven = new File(m2Home)).exists() )
         {
             maven = new File( "apache-maven-3.2.5" );
 
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