From 14586afcf54951dd6a3085fad3f6cd2c5dae9dd8 Mon Sep 17 00:00:00 2001
From: Federico Fissore <f.fissore@arduino.cc>
Date: Fri, 3 Jul 2015 18:09:56 +0200
Subject: [PATCH] Fixed possible NPE

---
 .../arduino/contributions/packages/ContributionsIndex.java  | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/arduino-core/src/cc/arduino/contributions/packages/ContributionsIndex.java b/arduino-core/src/cc/arduino/contributions/packages/ContributionsIndex.java
index c72d638ec..226ab424c 100644
--- a/arduino-core/src/cc/arduino/contributions/packages/ContributionsIndex.java
+++ b/arduino-core/src/cc/arduino/contributions/packages/ContributionsIndex.java
@@ -88,7 +88,11 @@ public abstract class ContributionsIndex {
   }
 
   public ContributedPlatform getInstalledPlatform(String packageName, String platformArch) {
-    List<ContributedPlatform> installedPlatforms = new LinkedList<>(Collections2.filter(findPlatforms(packageName, platformArch), new InstalledPredicate()));
+    List<ContributedPlatform> platforms = findPlatforms(packageName, platformArch);
+    if (platforms == null) {
+      return null;
+    }
+    List<ContributedPlatform> installedPlatforms = new LinkedList<>(Collections2.filter(platforms, new InstalledPredicate()));
     Collections.sort(installedPlatforms, new DownloadableContributionBuiltInAtTheBottomComparator());
 
     if (installedPlatforms.isEmpty()) {